{"product_id":"windmill-school-project","title":"Windmill Generator (Windturbine) School Project - 2-in-1 Wind Turbine Generator \u0026 Motorized House Light Kit","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eGo Science Classroom Series Windmill Generator (Windturbine) School Project\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003ch2\u003e2-in-1 Wind Turbine Generator \u0026amp; Motorized House Light Kit\u003c\/h2\u003e\n\u003ch3\u003eGo Science Classroom Series — Educational Concept Model Kit\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eGenerate electricity with airflow—or power the fan and house light using a battery.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eGo Science Classroom Series Windmill Generator\u003c\/strong\u003e is a pre-wired and pre-assembled 2-in-1 school project and educational working model that demonstrates two connected energy-conversion modes using the same DC motor, four-blade propeller and illuminated miniature house.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"1012\" height=\"569\" src=\"https:\/\/www.youtube.com\/embed\/Aefl98Z6Zio\" title=\"\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eIn \u003cstrong\u003eWindmill Generator Mode\u003c\/strong\u003e, the model demonstrates the project’s core real-world principle. When the propeller is placed in a suitable stream of air from a sufficiently powerful external fan, it rotates the DC motor shaft. The motor then functions as a small generator, producing electrical output that can illuminate the white LED mounted on the miniature house.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis passive mode allows students to demonstrate the actual sequence:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAirflow → Propeller Rotation → Mechanical Energy → Electrical Generation → House LED\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHowever, practical presentation conditions are not always predictable. During school projects, science exhibitions and classroom demonstrations, students may not have access to a sufficiently powerful external fan. Some exhibition halls may restrict large electrical appliances, provide limited table space or have airflow conditions that are unsuitable for rotating the propeller fast enough to produce a clearly visible LED response.\u003c\/p\u003e\n\u003cp\u003eTo help students present the model confidently in these situations, the kit also includes a \u003cstrong\u003eBattery Fan and House Light Mode\u003c\/strong\u003e. By connecting a 9V battery, students can operate the motorized propeller and illuminate the house LED simultaneously. This mode provides a reliable supporting demonstration of the model’s motor, circuit and lighting functions when suitable external airflow is unavailable.\u003c\/p\u003e\n\u003cp\u003eThe battery-powered mode does \u003cstrong\u003enot\u003c\/strong\u003e replace or represent wind-generated electricity. The passive windmill mode remains the actual airflow-to-electricity demonstration. Instead, the additional battery mode is a practical presentation feature designed to help students keep the model active, visible and easy to explain during school exhibitions, classroom assessments and project presentations.\u003c\/p\u003e\n\u003cp\u003eTogether, the two modes give students greater demonstration flexibility:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse \u003cstrong\u003ePassive Windmill Generator Mode\u003c\/strong\u003e when a suitable external airflow source is available.\u003c\/li\u003e\n\u003cli\u003eUse \u003cstrong\u003eBattery Fan and House Light Mode\u003c\/strong\u003e when external airflow is unavailable or impractical.\u003c\/li\u003e\n\u003cli\u003eCompare how the same DC motor behaves as a generator in one mode and as an electric motor in the other.\u003c\/li\u003e\n\u003cli\u003eDemonstrate the house LED, rotating propeller and connected circuit during different presentation conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis dual-mode arrangement helps students move beyond a static display. They can demonstrate the authentic wind-generation concept under suitable airflow and still present a complete working model when exhibition conditions make passive operation difficult.\u003c\/p\u003e\n\u003cp\u003eSuggested for \u003cstrong\u003eGrades 7–12\u003c\/strong\u003e, the kit can support:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSchool projects and educational working models\u003c\/li\u003e\n\u003cli\u003eScience exhibitions\u003c\/li\u003e\n\u003cli\u003eClassroom demonstrations\u003c\/li\u003e\n\u003cli\u003eSTEM and physics presentations\u003c\/li\u003e\n\u003cli\u003eRenewable-energy concept presentations\u003c\/li\u003e\n\u003cli\u003eEnergy-conversion activities\u003c\/li\u003e\n\u003cli\u003eElectrical-circuit demonstrations\u003c\/li\u003e\n\u003cli\u003eReports, practical assessments and viva\u003c\/li\u003e\n\u003cli\u003eSupervised home-learning demonstrations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eTwo Modes. One Connected Educational Model.\u003c\/h1\u003e\n\u003ch2\u003eMode 1 — Windmill Generator Mode\u003c\/h2\u003e\n\u003ch3\u003eNo Battery Required\u003c\/h3\u003e\n\u003cp\u003ePlace the model near a sufficiently powerful external fan and direct the airflow towards the four-blade propeller.\u003c\/p\u003e\n\u003cp\u003eAs the propeller rotates:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eAirflow produces mechanical motion.\u003c\/li\u003e\n\u003cli\u003eThe propeller turns the DC motor shaft.\u003c\/li\u003e\n\u003cli\u003eThe motor functions as a small generator.\u003c\/li\u003e\n\u003cli\u003eElectrical output passes through the circuit.\u003c\/li\u003e\n\u003cli\u003eThe white LED on the house may illuminate.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThis mode demonstrates:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWind Energy → Mechanical Rotation → Electrical Energy → Light Output\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe passive demonstration requires adequate airflow, suitable positioning and sufficient propeller speed.\u003c\/p\u003e\n\u003ch2\u003eMode 2 — Battery Fan and House Light Mode\u003c\/h2\u003e\n\u003ch3\u003e9V Battery Required\u003c\/h3\u003e\n\u003cp\u003eConnect one fresh 9V battery to the supplied battery snap connector.\u003c\/p\u003e\n\u003cp\u003eThe battery simultaneously:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePowers the DC motor\u003c\/li\u003e\n\u003cli\u003eRotates the propeller as an electric fan\u003c\/li\u003e\n\u003cli\u003eSupplies the LED circuit\u003c\/li\u003e\n\u003cli\u003eIlluminates the white house light\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis mode demonstrates:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBattery Energy → Electrical Energy → Mechanical Rotation + Light Output\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt allows the project to remain demonstrable in classrooms and exhibition halls where a high-speed external fan or suitable wind source may not be available.\u003c\/p\u003e\n\u003ch1\u003eWhat’s in the Pre-Assembled Kit?\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eBase sheet with green grass mat\u003c\/li\u003e\n\u003cli\u003eSmall miniature house model\u003c\/li\u003e\n\u003cli\u003ePre-soldered white LED mounted on the house\u003c\/li\u003e\n\u003cli\u003e4.5V DC motor\u003c\/li\u003e\n\u003cli\u003eMotor mounting clip\u003c\/li\u003e\n\u003cli\u003eWooden pillar mounting block\u003c\/li\u003e\n\u003cli\u003eFour-blade plastic propeller\u003c\/li\u003e\n\u003cli\u003e22-ohm current-limiting resistor\u003c\/li\u003e\n\u003cli\u003ePre-soldered connecting wires and circuit\u003c\/li\u003e\n\u003cli\u003eTwo bottom-to-top anchor screws\u003c\/li\u003e\n\u003cli\u003e9V battery snap connector\u003c\/li\u003e\n\u003cli\u003eDetailed digital instruction manual\u003c\/li\u003e\n\u003cli\u003eStep-by-step video demonstration\u003c\/li\u003e\n\u003cli\u003eSafety and troubleshooting guidance\u003c\/li\u003e\n\u003cli\u003eConcept recap\u003c\/li\u003e\n\u003cli\u003eCertificate of Completion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe motor, house LED, resistor, battery connector and associated wiring are supplied as an integrated educational model.\u003c\/p\u003e\n\u003ch1\u003eRequired Separately\u003c\/h1\u003e\n\u003ch2\u003eFor Windmill Generator Mode\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eA sufficiently powerful external electric fan or directed airflow source\u003c\/li\u003e\n\u003cli\u003eExternal fan is not included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFor Battery Fan and House Light Mode\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOne fresh 9V battery\u003c\/li\u003e\n\u003cli\u003eBattery is not included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eProduct Specifications\u003c\/h1\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003ePre-wired 2-in-1 Windmill Generator and Motorized House Light educational working model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain component\u003c\/td\u003e\n\u003ctd\u003e4.5V permanent-magnet DC motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePropeller\u003c\/td\u003e\n\u003ctd\u003eFour-blade plastic propeller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePassive mode\u003c\/td\u003e\n\u003ctd\u003eAirflow drives motor as a small generator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActive mode\u003c\/td\u003e\n\u003ctd\u003e9V battery powers motor and house LED simultaneously\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVisual output\u003c\/td\u003e\n\u003ctd\u003eWhite LED mounted on miniature house\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent-limiting component\u003c\/td\u003e\n\u003ctd\u003ePre-soldered 22-ohm resistor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery connection\u003c\/td\u003e\n\u003ctd\u003e9V battery snap connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStructural mounting\u003c\/td\u003e\n\u003ctd\u003eWooden pillar secured using two bottom-to-top screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003ctd\u003eGrass-covered base sheet with miniature house\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApproximate base dimensions\u003c\/td\u003e\n\u003ctd\u003e16 cm × 11 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApproximate assembled height\u003c\/td\u003e\n\u003ctd\u003eAbout 15 cm with motor pillar mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested grades\u003c\/td\u003e\n\u003ctd\u003eGrades 7–12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly type\u003c\/td\u003e\n\u003ctd\u003ePre-wired and pre-assembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended environment\u003c\/td\u003e\n\u003ctd\u003eSupervised, dry, indoor educational use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eDimensions are approximate and may vary slightly because of component placement, mounting and small-batch assembly.\u003c\/p\u003e\n\u003ch1\u003eA Complete Guided Learning Experience\u003c\/h1\u003e\n\u003cp\u003eThe Windmill Generator Kit combines the physical model with guided learning resources that help students understand:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe purpose of each component\u003c\/li\u003e\n\u003cli\u003eThe difference between motor and generator operation\u003c\/li\u003e\n\u003cli\u003eHow airflow creates propeller rotation\u003c\/li\u003e\n\u003cli\u003eHow a DC motor can produce a small electrical output when mechanically rotated\u003c\/li\u003e\n\u003cli\u003eHow a battery powers a DC motor\u003c\/li\u003e\n\u003cli\u003eHow one circuit can produce mechanical and light output\u003c\/li\u003e\n\u003cli\u003eWhy the current-limiting resistor is included\u003c\/li\u003e\n\u003cli\u003eHow airflow speed, distance and alignment affect the passive demonstration\u003c\/li\u003e\n\u003cli\u003eHow to perform both modes safely\u003c\/li\u003e\n\u003cli\u003eHow to troubleshoot common operating issues\u003c\/li\u003e\n\u003cli\u003eHow to explain the project during an exhibition or viva\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eDetailed Full-Colour Digital Instruction Manual Included\u003c\/h1\u003e\n\u003cp\u003eA product-specific digital instruction manual is included through a \u003cstrong\u003ededicated manual QR code\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe manual includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProduct introduction\u003c\/li\u003e\n\u003cli\u003eComponent checklist\u003c\/li\u003e\n\u003cli\u003eMotor and propeller identification\u003c\/li\u003e\n\u003cli\u003eHouse LED identification\u003c\/li\u003e\n\u003cli\u003eResistor and circuit explanation\u003c\/li\u003e\n\u003cli\u003eWooden pillar and base explanation\u003c\/li\u003e\n\u003cli\u003eWindmill Generator Mode instructions\u003c\/li\u003e\n\u003cli\u003eBattery Fan and House Light Mode instructions\u003c\/li\u003e\n\u003cli\u003eEnergy-conversion explanation\u003c\/li\u003e\n\u003cli\u003eObservation guidance\u003c\/li\u003e\n\u003cli\u003eTroubleshooting support\u003c\/li\u003e\n\u003cli\u003eSafety instructions\u003c\/li\u003e\n\u003cli\u003eConcept recap\u003c\/li\u003e\n\u003cli\u003eCertificate of Completion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe manual QR code is separate from the video QR code.\u003c\/p\u003e\n\u003cp\u003eA compatible internet-connected device is required to access the digital resource.\u003c\/p\u003e\n\u003ch1\u003eStep-by-Step Video Demonstration Included\u003c\/h1\u003e\n\u003cp\u003eA separate video demonstrates the model, its two operating modes and the expected observations.\u003c\/p\u003e\n\u003cp\u003eThe video is available through:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eThis product page and the Go Science website\u003c\/li\u003e\n\u003cli\u003eThe official Go Science YouTube channel\u003c\/li\u003e\n\u003cli\u003eThe dedicated video QR code supplied with the kit\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eOfficial Windmill Generator Video\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/youtu.be\/Aefl98Z6Zio\" title=\"Windmill School Project kit video Go Science Classroom series\" target=\"_blank\"\u003ehttps:\/\/youtu.be\/Aefl98Z6Zio\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe manual and video use \u003cstrong\u003eindependent QR codes\u003c\/strong\u003e, allowing each learning resource to be accessed separately.\u003c\/p\u003e\n\u003ch1\u003ePre-Wired for Direct Exploration\u003c\/h1\u003e\n\u003cp\u003eThe core electrical circuit is already assembled.\u003c\/p\u003e\n\u003cp\u003eStudents do not need to solder the:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDC motor\u003c\/li\u003e\n\u003cli\u003eHouse LED\u003c\/li\u003e\n\u003cli\u003eCurrent-limiting resistor\u003c\/li\u003e\n\u003cli\u003eBattery snap connector\u003c\/li\u003e\n\u003cli\u003eConnecting wires\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe wooden pillar is secured to the base, and the motor and propeller are positioned for direct demonstration.\u003c\/p\u003e\n\u003cp\u003eStudents can therefore focus on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePositioning the model\u003c\/li\u003e\n\u003cli\u003eDirecting airflow\u003c\/li\u003e\n\u003cli\u003eComparing the two operating modes\u003c\/li\u003e\n\u003cli\u003eConnecting and disconnecting the battery\u003c\/li\u003e\n\u003cli\u003eObserving the fan and LED\u003c\/li\u003e\n\u003cli\u003eExplaining the energy-conversion sequence\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eWatch the Complete Model Respond\u003c\/h1\u003e\n\u003ch2\u003eDemonstration 1 — Passive Windmill Generator Mode\u003c\/h2\u003e\n\u003ch3\u003eStep 1 — Prepare the Model\u003c\/h3\u003e\n\u003cp\u003ePlace the model on a flat, stable and dry surface.\u003c\/p\u003e\n\u003cp\u003eCheck that:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe wooden pillar is secure\u003c\/li\u003e\n\u003cli\u003eThe propeller rotates freely\u003c\/li\u003e\n\u003cli\u003eThe wires are not touching the blades\u003c\/li\u003e\n\u003cli\u003eNo battery is connected\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep 2 — Position the Airflow Source\u003c\/h3\u003e\n\u003cp\u003ePlace the model near a sufficiently powerful external fan.\u003c\/p\u003e\n\u003cp\u003eThe airflow should reach the propeller directly.\u003c\/p\u003e\n\u003ch3\u003eStep 3 — Adjust the Angle\u003c\/h3\u003e\n\u003cp\u003eTilt or rotate the model carefully until the airflow strikes the propeller blades effectively.\u003c\/p\u003e\n\u003ch3\u003eStep 4 — Observe the Rotation\u003c\/h3\u003e\n\u003cp\u003eAs the blades rotate, the motor shaft turns.\u003c\/p\u003e\n\u003ch3\u003eStep 5 — Observe the House LED\u003c\/h3\u003e\n\u003cp\u003eWhen the motor reaches sufficient rotational speed, the generated electrical output may cause the white LED on the house to glow.\u003c\/p\u003e\n\u003ch3\u003eStep 6 — Record the Conditions\u003c\/h3\u003e\n\u003cp\u003eStudents can note:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDistance from the external fan\u003c\/li\u003e\n\u003cli\u003eFan-speed setting\u003c\/li\u003e\n\u003cli\u003ePropeller angle\u003c\/li\u003e\n\u003cli\u003eApproximate brightness of the LED\u003c\/li\u003e\n\u003cli\u003eWhether repositioning improved the response\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDemonstration 2 — Battery Fan and House Light Mode\u003c\/h2\u003e\n\u003ch3\u003eStep 1 — Stop the Passive Demonstration\u003c\/h3\u003e\n\u003cp\u003eMove the model away from the external fan and allow the propeller to stop.\u003c\/p\u003e\n\u003ch3\u003eStep 2 — Check the Model\u003c\/h3\u003e\n\u003cp\u003eEnsure:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe propeller is unobstructed\u003c\/li\u003e\n\u003cli\u003eThe battery connector wires are not touching each other\u003c\/li\u003e\n\u003cli\u003eHands and loose clothing are away from the propeller\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep 3 — Connect the Battery\u003c\/h3\u003e\n\u003cp\u003eAttach one fresh 9V battery to the battery snap connector.\u003c\/p\u003e\n\u003ch3\u003eStep 4 — Observe Both Outputs\u003c\/h3\u003e\n\u003cp\u003eThe battery should:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRotate the DC motor and propeller\u003c\/li\u003e\n\u003cli\u003ePower the white LED on the house\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe propeller functions as an electric fan while the house light illuminates.\u003c\/p\u003e\n\u003ch3\u003eStep 5 — Disconnect After Use\u003c\/h3\u003e\n\u003cp\u003eDisconnect the battery immediately after completing the demonstration.\u003c\/p\u003e\n\u003cp\u003eDo not leave the battery attached during storage or while the kit is unattended.\u003c\/p\u003e\n\u003ch1\u003eHow Windmill Generator Mode Works\u003c\/h1\u003e\n\u003cp\u003eA permanent-magnet DC motor can operate in two related ways.\u003c\/p\u003e\n\u003cp\u003eWhen electrical energy is supplied to it, it functions as a motor and produces rotation.\u003c\/p\u003e\n\u003cp\u003eWhen its shaft is rotated mechanically, it can produce a small electrical output and function as a generator.\u003c\/p\u003e\n\u003cp\u003eIn the passive mode:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eMoving air reaches the propeller.\u003c\/li\u003e\n\u003cli\u003eThe propeller begins to rotate.\u003c\/li\u003e\n\u003cli\u003eThe rotating propeller turns the motor shaft.\u003c\/li\u003e\n\u003cli\u003eMotion occurs inside the motor’s magnetic system.\u003c\/li\u003e\n\u003cli\u003eA small electrical output is produced.\u003c\/li\u003e\n\u003cli\u003eCurrent passes through the LED circuit.\u003c\/li\u003e\n\u003cli\u003eThe house LED may glow when sufficient output is generated.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe demonstration represents:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKinetic Energy of Air → Mechanical Energy → Electrical Energy → Light Energy\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch1\u003eHow Battery Fan and House Light Mode Works\u003c\/h1\u003e\n\u003cp\u003eWhen a 9V battery is connected:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eElectrical energy enters the pre-wired circuit.\u003c\/li\u003e\n\u003cli\u003eCurrent reaches the DC motor.\u003c\/li\u003e\n\u003cli\u003eThe motor shaft rotates.\u003c\/li\u003e\n\u003cli\u003eThe propeller produces visible mechanical motion and airflow.\u003c\/li\u003e\n\u003cli\u003eCurrent also passes through the LED branch of the circuit.\u003c\/li\u003e\n\u003cli\u003eThe resistor limits current to the LED.\u003c\/li\u003e\n\u003cli\u003eThe white house light illuminates.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe demonstration represents:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChemical Energy in the Battery → Electrical Energy → Mechanical Energy + Light Energy\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe motor and LED operate together because they are connected within the integrated circuit.\u003c\/p\u003e\n\u003ch1\u003eThe Role of the 22-Ohm Resistor\u003c\/h1\u003e\n\u003cp\u003eThe white LED requires controlled current during battery-powered operation.\u003c\/p\u003e\n\u003cp\u003eThe pre-soldered \u003cstrong\u003e22-ohm resistor\u003c\/strong\u003e helps limit current passing through the LED branch of the circuit.\u003c\/p\u003e\n\u003cp\u003eWithout suitable current limitation, excess current could damage the LED.\u003c\/p\u003e\n\u003cp\u003eThe resistor therefore helps students understand that practical circuits often include components that protect or regulate other components.\u003c\/p\u003e\n\u003ch1\u003eWhy the Two Modes Matter\u003c\/h1\u003e\n\u003cp\u003eMany simple windmill models demonstrate only one operating condition and may depend entirely on strong external airflow.\u003c\/p\u003e\n\u003cp\u003eThis 2-in-1 model supports two related demonstrations:\u003c\/p\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eMode\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eInput\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eMotor function\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eVisible outputs\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWindmill Generator Mode\u003c\/td\u003e\n\u003ctd\u003eExternal airflow\u003c\/td\u003e\n\u003ctd\u003eMotor acts as a generator\u003c\/td\u003e\n\u003ctd\u003ePropeller rotates and house LED may glow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Fan and House Light Mode\u003c\/td\u003e\n\u003ctd\u003e9V battery\u003c\/td\u003e\n\u003ctd\u003eMotor acts as an electric motor\u003c\/td\u003e\n\u003ctd\u003ePropeller spins and house LED glows\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThis allows students to compare:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMechanical-to-electrical conversion\u003c\/li\u003e\n\u003cli\u003eElectrical-to-mechanical conversion\u003c\/li\u003e\n\u003cli\u003eGenerator operation\u003c\/li\u003e\n\u003cli\u003eMotor operation\u003c\/li\u003e\n\u003cli\u003ePassive and powered systems\u003c\/li\u003e\n\u003cli\u003eRenewable-energy concepts\u003c\/li\u003e\n\u003cli\u003eElectrical-load operation\u003c\/li\u003e\n\u003cli\u003eSimultaneous mechanical and luminous output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eUnderstand the Complete Functional System\u003c\/h1\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eStage\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eComponent\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eFunction\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAir input\u003c\/td\u003e\n\u003ctd\u003eExternal fan or directed airflow\u003c\/td\u003e\n\u003ctd\u003eRotates the propeller in passive mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical capture\u003c\/td\u003e\n\u003ctd\u003eFour-blade propeller\u003c\/td\u003e\n\u003ctd\u003eCaptures airflow or produces airflow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy-conversion component\u003c\/td\u003e\n\u003ctd\u003e4.5V DC motor\u003c\/td\u003e\n\u003ctd\u003eOperates as a generator or electric motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical protection\u003c\/td\u003e\n\u003ctd\u003e22-ohm resistor\u003c\/td\u003e\n\u003ctd\u003eHelps limit current through the house LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight output\u003c\/td\u003e\n\u003ctd\u003eWhite LED\u003c\/td\u003e\n\u003ctd\u003eProvides visible electrical output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowered input\u003c\/td\u003e\n\u003ctd\u003e9V battery and snap connector\u003c\/td\u003e\n\u003ctd\u003ePowers the active fan and light mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStructural support\u003c\/td\u003e\n\u003ctd\u003eWooden pillar and anchor screws\u003c\/td\u003e\n\u003ctd\u003eSupports the motor and propeller vertically\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVisual setting\u003c\/td\u003e\n\u003ctd\u003eHouse and grass-covered base\u003c\/td\u003e\n\u003ctd\u003eProvides contextual presentation for the demonstration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch1\u003eFrom Wind to Light\u003c\/h1\u003e\n\u003cp\u003eIn the passive demonstration, the student can follow the complete sequence:\u003c\/p\u003e\n\u003ch3\u003eAirflow\u003c\/h3\u003e\n\u003cp\u003eA moving air stream reaches the four-blade propeller.\u003c\/p\u003e\n\u003ch3\u003eRotation\u003c\/h3\u003e\n\u003cp\u003eThe propeller captures part of the airflow and rotates.\u003c\/p\u003e\n\u003ch3\u003eGenerator Action\u003c\/h3\u003e\n\u003cp\u003eThe rotating shaft drives the DC motor mechanically.\u003c\/p\u003e\n\u003ch3\u003eElectrical Output\u003c\/h3\u003e\n\u003cp\u003eThe motor produces a small electrical output.\u003c\/p\u003e\n\u003ch3\u003eCircuit Response\u003c\/h3\u003e\n\u003cp\u003eCurrent passes through the resistor and LED circuit.\u003c\/p\u003e\n\u003ch3\u003eVisible Result\u003c\/h3\u003e\n\u003cp\u003eThe LED on the house may glow when the generated output is sufficient.\u003c\/p\u003e\n\u003ch1\u003eFrom Battery to Motion and Light\u003c\/h1\u003e\n\u003cp\u003eIn the active demonstration:\u003c\/p\u003e\n\u003ch3\u003eBattery Input\u003c\/h3\u003e\n\u003cp\u003eThe 9V battery supplies electrical energy.\u003c\/p\u003e\n\u003ch3\u003eMotor Response\u003c\/h3\u003e\n\u003cp\u003eThe DC motor rotates the propeller.\u003c\/p\u003e\n\u003ch3\u003eFan Action\u003c\/h3\u003e\n\u003cp\u003eThe propeller creates visible rotation and airflow.\u003c\/p\u003e\n\u003ch3\u003eLighting Response\u003c\/h3\u003e\n\u003cp\u003eThe house LED receives current through the protected circuit.\u003c\/p\u003e\n\u003ch3\u003eSimultaneous Output\u003c\/h3\u003e\n\u003cp\u003eThe motorized fan and house light operate together.\u003c\/p\u003e\n\u003ch1\u003eTest. Observe. Discover.\u003c\/h1\u003e\n\u003cp\u003eStudents can perform supervised comparisons such as:\u003c\/p\u003e\n\u003ch2\u003eTest 1 — Fan Distance\u003c\/h2\u003e\n\u003cp\u003eMove the external fan closer to or farther from the propeller.\u003c\/p\u003e\n\u003cp\u003eObserve how the propeller speed and LED response change.\u003c\/p\u003e\n\u003ch2\u003eTest 2 — Airflow Angle\u003c\/h2\u003e\n\u003cp\u003eChange the angle between the model and the external fan.\u003c\/p\u003e\n\u003cp\u003eObserve which position produces the best rotation.\u003c\/p\u003e\n\u003ch2\u003eTest 3 — Fan-Speed Setting\u003c\/h2\u003e\n\u003cp\u003eCompare different external-fan speed settings.\u003c\/p\u003e\n\u003cp\u003eRecord when the LED first begins to glow.\u003c\/p\u003e\n\u003ch2\u003eTest 4 — Passive and Active Modes\u003c\/h2\u003e\n\u003cp\u003eCompare:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePassive generator operation without a battery\u003c\/li\u003e\n\u003cli\u003eActive motor and light operation with a battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTest 5 — Battery Condition\u003c\/h2\u003e\n\u003cp\u003eUse a fresh battery and observe the fan and LED response.\u003c\/p\u003e\n\u003cp\u003eA weak battery may result in slower rotation or reduced LED brightness.\u003c\/p\u003e\n\u003ch2\u003eTest 6 — Propeller Alignment\u003c\/h2\u003e\n\u003cp\u003eObserve whether the propeller rotates freely and evenly.\u003c\/p\u003e\n\u003cp\u003eDo not operate a damaged, obstructed or badly misaligned propeller.\u003c\/p\u003e\n\u003ch1\u003eLearn Through Every Demonstration\u003c\/h1\u003e\n\u003cp\u003eThe kit supports students in practising:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComponent identification\u003c\/li\u003e\n\u003cli\u003eCareful observation\u003c\/li\u003e\n\u003cli\u003eEnergy-pathway explanation\u003c\/li\u003e\n\u003cli\u003eMode comparison\u003c\/li\u003e\n\u003cli\u003eGenerator and motor differentiation\u003c\/li\u003e\n\u003cli\u003eBattery connection and disconnection\u003c\/li\u003e\n\u003cli\u003eAirflow alignment\u003c\/li\u003e\n\u003cli\u003eCause-and-effect reasoning\u003c\/li\u003e\n\u003cli\u003eBasic circuit understanding\u003c\/li\u003e\n\u003cli\u003eTroubleshooting\u003c\/li\u003e\n\u003cli\u003eSafe demonstration practice\u003c\/li\u003e\n\u003cli\u003eProject presentation and viva explanation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eExplore Key Concepts\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eWind energy\u003c\/li\u003e\n\u003cli\u003eRenewable-energy concepts\u003c\/li\u003e\n\u003cli\u003eMechanical energy\u003c\/li\u003e\n\u003cli\u003eElectrical energy\u003c\/li\u003e\n\u003cli\u003eLight energy\u003c\/li\u003e\n\u003cli\u003eEnergy conversion\u003c\/li\u003e\n\u003cli\u003eDC motor operation\u003c\/li\u003e\n\u003cli\u003eDC generator principle\u003c\/li\u003e\n\u003cli\u003eElectromagnetic induction\u003c\/li\u003e\n\u003cli\u003ePropeller and rotor motion\u003c\/li\u003e\n\u003cli\u003eMotorized fan operation\u003c\/li\u003e\n\u003cli\u003eLED circuits\u003c\/li\u003e\n\u003cli\u003eCurrent limitation\u003c\/li\u003e\n\u003cli\u003eBattery-powered circuits\u003c\/li\u003e\n\u003cli\u003eSimultaneous electrical loads\u003c\/li\u003e\n\u003cli\u003eObservation and experimentation\u003c\/li\u003e\n\u003cli\u003eSustainable-energy systems\u003c\/li\u003e\n\u003cli\u003eProof-of-concept engineering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eOne Model. Multiple Learning Outcomes.\u003c\/h1\u003e\n\u003cp\u003eStudents can use the same model to investigate:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHow wind can create rotational motion\u003c\/li\u003e\n\u003cli\u003eHow rotation can produce electrical output\u003c\/li\u003e\n\u003cli\u003eWhy the LED needs sufficient generated voltage\u003c\/li\u003e\n\u003cli\u003eWhy the airflow angle affects performance\u003c\/li\u003e\n\u003cli\u003eHow a DC motor can act as a generator\u003c\/li\u003e\n\u003cli\u003eHow a battery makes the motor rotate\u003c\/li\u003e\n\u003cli\u003eWhy the house LED glows in both modes\u003c\/li\u003e\n\u003cli\u003eHow the resistor supports the LED circuit\u003c\/li\u003e\n\u003cli\u003eWhat changes between passive and active operation\u003c\/li\u003e\n\u003cli\u003eWhy real wind-energy systems require additional equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eBuilt for Confident Demonstration\u003c\/h1\u003e\n\u003cp\u003eThe assembled format is suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSchool science projects\u003c\/li\u003e\n\u003cli\u003eEducational working-model presentations\u003c\/li\u003e\n\u003cli\u003eScience exhibitions\u003c\/li\u003e\n\u003cli\u003eClassroom demonstrations\u003c\/li\u003e\n\u003cli\u003eRenewable-energy lessons\u003c\/li\u003e\n\u003cli\u003eEnergy-conversion lessons\u003c\/li\u003e\n\u003cli\u003eSTEM activities\u003c\/li\u003e\n\u003cli\u003ePhysics presentations\u003c\/li\u003e\n\u003cli\u003ePractical assessments\u003c\/li\u003e\n\u003cli\u003eProject reports\u003c\/li\u003e\n\u003cli\u003eViva and oral explanation\u003c\/li\u003e\n\u003cli\u003eSupervised home learning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe visual model allows students to point to the airflow source, propeller, motor, resistor, LED and battery connector while explaining the complete process.\u003c\/p\u003e\n\u003ch1\u003eSuggested Student Explanation\u003c\/h1\u003e\n\u003cblockquote\u003e\n\u003cp\u003e“This is a 2-in-1 wind turbine generator and motorized house light model. In Windmill Generator Mode, external airflow turns the propeller. The propeller rotates the DC motor shaft, and the motor acts as a small generator. The generated electrical output passes through the circuit and may light the LED on the house. In Battery Fan and House Light Mode, a 9V battery powers the motor and the LED together. The propeller rotates as a fan while the house light glows. The model therefore demonstrates both mechanical-to-electrical and electrical-to-mechanical energy conversion.”\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch1\u003eBuild Upon the Foundation\u003c\/h1\u003e\n\u003cp\u003eAfter understanding the model, students may explore more advanced topics such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWind-turbine blade design\u003c\/li\u003e\n\u003cli\u003eGenerator efficiency\u003c\/li\u003e\n\u003cli\u003eRotational speed\u003c\/li\u003e\n\u003cli\u003eVoltage generation\u003c\/li\u003e\n\u003cli\u003eWind direction\u003c\/li\u003e\n\u003cli\u003eAerodynamic blade angles\u003c\/li\u003e\n\u003cli\u003eBattery-powered motor systems\u003c\/li\u003e\n\u003cli\u003eSeries and parallel circuit concepts\u003c\/li\u003e\n\u003cli\u003eVoltage and current measurement\u003c\/li\u003e\n\u003cli\u003eEnergy storage\u003c\/li\u003e\n\u003cli\u003eCharge controllers\u003c\/li\u003e\n\u003cli\u003eWind-farm planning\u003c\/li\u003e\n\u003cli\u003eHybrid renewable-energy systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional equipment, measurement instruments, components and safety controls would be required for expanded experiments.\u003c\/p\u003e\n\u003ch1\u003eThis Concept Can Also Be Used to Explore\u003c\/h1\u003e\n\u003ch2\u003eWind-Energy Systems\u003c\/h2\u003e\n\u003cp\u003eWind turbines use moving air to produce rotational motion.\u003c\/p\u003e\n\u003ch2\u003eElectric Motors and Generators\u003c\/h2\u003e\n\u003cp\u003eA DC motor can demonstrate both powered rotation and small-scale generation.\u003c\/p\u003e\n\u003ch2\u003eSustainable Infrastructure\u003c\/h2\u003e\n\u003cp\u003eRenewable-energy systems can contribute to broader discussions about electricity generation and community infrastructure.\u003c\/p\u003e\n\u003ch2\u003eRural and Urban Energy Concepts\u003c\/h2\u003e\n\u003cp\u003eThe house model provides visual context for discussing how generated electricity may supply a load.\u003c\/p\u003e\n\u003ch2\u003eEnergy Efficiency\u003c\/h2\u003e\n\u003cp\u003eStudents can discuss how energy is transferred and why losses occur during every conversion stage.\u003c\/p\u003e\n\u003ch2\u003eElectrical Protection\u003c\/h2\u003e\n\u003cp\u003eThe resistor demonstrates the importance of controlling current through sensitive components.\u003c\/p\u003e\n\u003ch1\u003eConcept, Learning-Approach and SDG Connections\u003c\/h1\u003e\n\u003cp\u003eThe Windmill Generator Kit can support:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExperiential learning\u003c\/li\u003e\n\u003cli\u003eInquiry-based learning\u003c\/li\u003e\n\u003cli\u003eProject-based learning\u003c\/li\u003e\n\u003cli\u003eSTEM education\u003c\/li\u003e\n\u003cli\u003eConceptual understanding\u003c\/li\u003e\n\u003cli\u003eObservation and problem solving\u003c\/li\u003e\n\u003cli\u003eTechnological literacy\u003c\/li\u003e\n\u003cli\u003eRenewable-energy awareness\u003c\/li\u003e\n\u003cli\u003eGuided classroom demonstration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe project may be discussed in relation to broad educational themes connected with:\u003c\/p\u003e\n\u003ch2\u003eSDG 7 — Affordable and Clean Energy\u003c\/h2\u003e\n\u003cp\u003eThe passive mode introduces the concept of electricity generation using airflow and renewable wind energy.\u003c\/p\u003e\n\u003ch2\u003eSDG 11 — Sustainable Cities and Communities\u003c\/h2\u003e\n\u003cp\u003eThe house-light demonstration can support discussions about sustainable energy systems and community infrastructure.\u003c\/p\u003e\n\u003ch2\u003eSDG 13 — Climate Action\u003c\/h2\u003e\n\u003cp\u003eThe model can introduce conversations about renewable-energy technologies and reduced dependence on conventional energy sources.\u003c\/p\u003e\n\u003cp\u003eThese are broad educational connections only and do not represent official SDG certification, approval or verified environmental performance.\u003c\/p\u003e\n\u003ch1\u003eA Complete Learning Journey\u003c\/h1\u003e\n\u003cp\u003eThe Windmill Generator Kit guides students through:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdentify → Position → Generate → Power → Observe → Compare → Troubleshoot → Explain\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBy the end of the guided activity, students should be better prepared to explain:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHow airflow turns a propeller\u003c\/li\u003e\n\u003cli\u003eHow rotation can drive a DC motor as a generator\u003c\/li\u003e\n\u003cli\u003eHow electrical output can operate an LED\u003c\/li\u003e\n\u003cli\u003eHow a battery powers a motor\u003c\/li\u003e\n\u003cli\u003eHow the same battery powers the house LED\u003c\/li\u003e\n\u003cli\u003eWhy a resistor is used in the LED circuit\u003c\/li\u003e\n\u003cli\u003eWhy airflow strength and direction affect performance\u003c\/li\u003e\n\u003cli\u003eHow the two operating modes differ\u003c\/li\u003e\n\u003cli\u003eHow energy changes form throughout the model\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eImportant Educational and Usage Information\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eThis is a pre-assembled educational proof-of-concept model.\u003c\/li\u003e\n\u003cli\u003eSuggested for Grades 7–12.\u003c\/li\u003e\n\u003cli\u003eAdult or teacher supervision is recommended.\u003c\/li\u003e\n\u003cli\u003eUse the model on a clean, dry and stable surface.\u003c\/li\u003e\n\u003cli\u003eKeep fingers, hair, jewellery and loose clothing away from the spinning propeller.\u003c\/li\u003e\n\u003cli\u003eDo not touch the propeller while it is rotating.\u003c\/li\u003e\n\u003cli\u003eDo not obstruct or deliberately stall the motor.\u003c\/li\u003e\n\u003cli\u003eKeep wires clear of the propeller.\u003c\/li\u003e\n\u003cli\u003eDo not short-circuit the battery connector.\u003c\/li\u003e\n\u003cli\u003eConnect only one suitable 9V battery during the guided active demonstration.\u003c\/li\u003e\n\u003cli\u003eDo not connect the model to AC mains electricity.\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery immediately after use.\u003c\/li\u003e\n\u003cli\u003eNever leave the battery connected while the kit is unattended.\u003c\/li\u003e\n\u003cli\u003eDo not use near water, moisture or conductive surfaces.\u003c\/li\u003e\n\u003cli\u003eDo not pull the wires, LED or battery connector.\u003c\/li\u003e\n\u003cli\u003eHandle the miniature house and wooden pillar carefully.\u003c\/li\u003e\n\u003cli\u003eStore the model in a cool and dry location.\u003c\/li\u003e\n\u003cli\u003eAn external high-speed fan may be required for passive generator mode.\u003c\/li\u003e\n\u003cli\u003eThe external fan and 9V battery are not included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eTroubleshooting Guide\u003c\/h1\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eObservation\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003ePossible cause\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eCorrective check\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePropeller spins but LED does not glow in passive mode\u003c\/td\u003e\n\u003ctd\u003eInsufficient airflow, low rotational speed or poor angle\u003c\/td\u003e\n\u003ctd\u003eIncrease fan speed, move closer and direct airflow towards the blades\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePropeller does not rotate under external airflow\u003c\/td\u003e\n\u003ctd\u003eAirflow is weak, misaligned or obstructed\u003c\/td\u003e\n\u003ctd\u003eReposition the model and ensure the propeller rotates freely\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED glows only faintly in passive mode\u003c\/td\u003e\n\u003ctd\u003eGenerated electrical output is low\u003c\/td\u003e\n\u003ctd\u003eIncrease propeller speed and improve airflow alignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNeither fan nor LED operates with battery\u003c\/td\u003e\n\u003ctd\u003eWeak battery or poor snap connection\u003c\/td\u003e\n\u003ctd\u003eDisconnect and reconnect a fresh 9V battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFan spins but house LED does not glow with battery\u003c\/td\u003e\n\u003ctd\u003eLoose circuit connection or LED fault\u003c\/td\u003e\n\u003ctd\u003eDisconnect the battery and inspect visible wiring without altering soldered joints\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED glows but propeller does not spin with battery\u003c\/td\u003e\n\u003ctd\u003eMotor obstruction, loose motor connection or mechanical resistance\u003c\/td\u003e\n\u003ctd\u003eDisconnect the battery and check that the propeller rotates freely\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWooden pillar feels loose\u003c\/td\u003e\n\u003ctd\u003eBottom anchor screws require tightening\u003c\/td\u003e\n\u003ctd\u003eSupport the pillar and carefully tighten the screws from beneath the base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePropeller vibrates\u003c\/td\u003e\n\u003ctd\u003eMisalignment, looseness or blade damage\u003c\/td\u003e\n\u003ctd\u003eDisconnect all power and inspect the propeller before reuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery connector becomes warm\u003c\/td\u003e\n\u003ctd\u003eShort circuit, damaged connector or incorrect use\u003c\/td\u003e\n\u003ctd\u003eDisconnect the battery immediately and discontinue use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor becomes unusually warm\u003c\/td\u003e\n\u003ctd\u003eProlonged operation or obstruction\u003c\/td\u003e\n\u003ctd\u003eDisconnect the battery and allow the motor to cool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eStop using the model if any component becomes excessively hot, damaged, loose, produces an unusual smell or shows signs of electrical failure.\u003c\/p\u003e\n\u003ch1\u003eProduct Appearance and Assembly Note\u003c\/h1\u003e\n\u003cp\u003eThis educational working model is assembled in small batches.\u003c\/p\u003e\n\u003cp\u003eMinor variations may occur in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHouse colour or printed finish\u003c\/li\u003e\n\u003cli\u003eRoof pattern\u003c\/li\u003e\n\u003cli\u003eGrass-mat shade or texture\u003c\/li\u003e\n\u003cli\u003eBase-sheet finish\u003c\/li\u003e\n\u003cli\u003eWooden pillar colour and grain\u003c\/li\u003e\n\u003cli\u003ePropeller colour or shape\u003c\/li\u003e\n\u003cli\u003eMotor finish\u003c\/li\u003e\n\u003cli\u003eMotor-mount appearance\u003c\/li\u003e\n\u003cli\u003eLED position\u003c\/li\u003e\n\u003cli\u003eResistor brand or colour bands\u003c\/li\u003e\n\u003cli\u003eWire colour or length\u003c\/li\u003e\n\u003cli\u003eBattery-snap colour\u003c\/li\u003e\n\u003cli\u003eScrew type\u003c\/li\u003e\n\u003cli\u003eComponent placement\u003c\/li\u003e\n\u003cli\u003eAdhesive or fastening finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese variations may occur because of manufacturing, component availability and assembly updates and do not necessarily alter the intended demonstration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImages\/creative illustration are for reference. Actual product may vary due to manufacturing, component availability \u0026amp; assembly update.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch1\u003eImportant Product Limitation\u003c\/h1\u003e\n\u003cp\u003eThis is a simplified educational proof-of-concept model.\u003c\/p\u003e\n\u003cp\u003eIt is not intended or certified as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA household wind-power system\u003c\/li\u003e\n\u003cli\u003eA commercial wind turbine\u003c\/li\u003e\n\u003cli\u003eA municipal power-generation system\u003c\/li\u003e\n\u003cli\u003eA battery charger\u003c\/li\u003e\n\u003cli\u003eAn energy-storage system\u003c\/li\u003e\n\u003cli\u003eA household appliance\u003c\/li\u003e\n\u003cli\u003eA finished consumer fan\u003c\/li\u003e\n\u003cli\u003eA commercial lighting system\u003c\/li\u003e\n\u003cli\u003eA weatherproof outdoor product\u003c\/li\u003e\n\u003cli\u003eA calibrated generator\u003c\/li\u003e\n\u003cli\u003eA voltage, current, wind-speed or efficiency measurement instrument\u003c\/li\u003e\n\u003cli\u003eA substitute for professional renewable-energy equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePassive-mode performance depends on airflow strength, airflow direction, distance from the fan, propeller alignment, motor characteristics, LED requirements and component variation.\u003c\/p\u003e\n\u003cp\u003eCommercial wind-energy systems use specialised turbines, alternators, regulators, transformers, charge controllers, energy-storage systems and safety equipment that are outside the scope of this model.\u003c\/p\u003e\n\u003ch1\u003eReturn, Refund and Exchange Notice\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eThis educational working model contains tested and sensitive electronic components. Kits that have been opened, powered, activated, tested, used, altered, exposed to moisture, subjected to unsuitable operating conditions or physically damaged are not eligible for return, refund or exchange. The required 9V battery and external fan are not included. Please review the product description, included contents, dimensions, power requirement, product photographs, demonstration video and operating instructions carefully before purchase.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch1\u003eReferences and Educational-Mapping Notice\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eReferences to NEP 2020, NCERT\/CBSE, SDGs and concept mapping are for illustrative, reference and educational-use purposes only. They indicate broad learning relevance and do not imply endorsement, affiliation, approval, certification or official alignment by any institution or authority. Concept mapping and learning relevance may vary depending on demonstration conditions, airflow, assembly, supervision, curriculum and classroom use.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Go Science","offers":[{"title":"Default Title","offer_id":45747898089519,"sku":"2671814292808","price":649.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/4442\/3471\/files\/Windmill_Generator_Windturbine_School_Project_go_science_classroom_series_image_1.jpg?v=1785899897","url":"https:\/\/goscience.in\/products\/windmill-school-project","provider":"Go Science","version":"1.0","type":"link"}