Go Science Classroom Series Windmill Generator (Windturbine) School Project

2-in-1 Wind Turbine Generator & Motorized House Light Kit

Go Science Classroom Series — Educational Concept Model Kit

Generate electricity with airflow—or power the fan and house light using a battery.

The Go Science Classroom Series Windmill Generator 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.

In Windmill Generator Mode, 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.

This passive mode allows students to demonstrate the actual sequence:

Airflow → Propeller Rotation → Mechanical Energy → Electrical Generation → House LED

However, 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.

To help students present the model confidently in these situations, the kit also includes a Battery Fan and House Light Mode. 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.

The battery-powered mode does not 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.

Together, the two modes give students greater demonstration flexibility:

• Use Passive Windmill Generator Mode when a suitable external airflow source is available.
• Use Battery Fan and House Light Mode when external airflow is unavailable or impractical.
• Compare how the same DC motor behaves as a generator in one mode and as an electric motor in the other.
• Demonstrate the house LED, rotating propeller and connected circuit during different presentation conditions.

This 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.

Suggested for Grades 7–12, the kit can support:

• School projects and educational working models
• Science exhibitions
• Classroom demonstrations
• STEM and physics presentations
• Renewable-energy concept presentations
• Energy-conversion activities
• Electrical-circuit demonstrations
• Reports, practical assessments and viva
• Supervised home-learning demonstrations

Two Modes. One Connected Educational Model.

Mode 1 — Windmill Generator Mode

No Battery Required

Place the model near a sufficiently powerful external fan and direct the airflow towards the four-blade propeller.

As the propeller rotates:

1. Airflow produces mechanical motion.
2. The propeller turns the DC motor shaft.
3. The motor functions as a small generator.
4. Electrical output passes through the circuit.
5. The white LED on the house may illuminate.

This mode demonstrates:

Wind Energy → Mechanical Rotation → Electrical Energy → Light Output

The passive demonstration requires adequate airflow, suitable positioning and sufficient propeller speed.

Mode 2 — Battery Fan and House Light Mode

9V Battery Required

Connect one fresh 9V battery to the supplied battery snap connector.

The battery simultaneously:

• Powers the DC motor
• Rotates the propeller as an electric fan
• Supplies the LED circuit
• Illuminates the white house light

This mode demonstrates:

Battery Energy → Electrical Energy → Mechanical Rotation + Light Output

It 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.

What’s in the Pre-Assembled Kit?

• Base sheet with green grass mat
• Small miniature house model
• Pre-soldered white LED mounted on the house
• 4.5V DC motor
• Motor mounting clip
• Wooden pillar mounting block
• Four-blade plastic propeller
• 22-ohm current-limiting resistor
• Pre-soldered connecting wires and circuit
• Two bottom-to-top anchor screws
• 9V battery snap connector
• Detailed digital instruction manual
• Step-by-step video demonstration
• Safety and troubleshooting guidance
• Concept recap
• Certificate of Completion

The motor, house LED, resistor, battery connector and associated wiring are supplied as an integrated educational model.

Required Separately

For Windmill Generator Mode

• A sufficiently powerful external electric fan or directed airflow source
• External fan is not included

For Battery Fan and House Light Mode

• One fresh 9V battery
• Battery is not included

Product Specifications

Dimensions are approximate and may vary slightly because of component placement, mounting and small-batch assembly.

A Complete Guided Learning Experience

The Windmill Generator Kit combines the physical model with guided learning resources that help students understand:

• The purpose of each component
• The difference between motor and generator operation
• How airflow creates propeller rotation
• How a DC motor can produce a small electrical output when mechanically rotated
• How a battery powers a DC motor
• How one circuit can produce mechanical and light output
• Why the current-limiting resistor is included
• How airflow speed, distance and alignment affect the passive demonstration
• How to perform both modes safely
• How to troubleshoot common operating issues
• How to explain the project during an exhibition or viva

Detailed Full-Colour Digital Instruction Manual Included

A product-specific digital instruction manual is included through a dedicated manual QR code.

The manual includes:

• Product introduction
• Component checklist
• Motor and propeller identification
• House LED identification
• Resistor and circuit explanation
• Wooden pillar and base explanation
• Windmill Generator Mode instructions
• Battery Fan and House Light Mode instructions
• Energy-conversion explanation
• Observation guidance
• Troubleshooting support
• Safety instructions
• Concept recap
• Certificate of Completion

The manual QR code is separate from the video QR code.

A compatible internet-connected device is required to access the digital resource.

Step-by-Step Video Demonstration Included

A separate video demonstrates the model, its two operating modes and the expected observations.

The video is available through:

1. This product page and the Go Science website
2. The official Go Science YouTube channel
3. The dedicated video QR code supplied with the kit

Official Windmill Generator Video

https://youtu.be/Aefl98Z6Zio

The manual and video use independent QR codes, allowing each learning resource to be accessed separately.

Pre-Wired for Direct Exploration

The core electrical circuit is already assembled.

Students do not need to solder the:

• DC motor
• House LED
• Current-limiting resistor
• Battery snap connector
• Connecting wires

The wooden pillar is secured to the base, and the motor and propeller are positioned for direct demonstration.

Students can therefore focus on:

• Positioning the model
• Directing airflow
• Comparing the two operating modes
• Connecting and disconnecting the battery
• Observing the fan and LED
• Explaining the energy-conversion sequence

Watch the Complete Model Respond

Demonstration 1 — Passive Windmill Generator Mode

Step 1 — Prepare the Model

Place the model on a flat, stable and dry surface.

Check that:

• The wooden pillar is secure
• The propeller rotates freely
• The wires are not touching the blades
• No battery is connected

Step 2 — Position the Airflow Source

Place the model near a sufficiently powerful external fan.

The airflow should reach the propeller directly.

Step 3 — Adjust the Angle

Tilt or rotate the model carefully until the airflow strikes the propeller blades effectively.

Step 4 — Observe the Rotation

As the blades rotate, the motor shaft turns.

Step 5 — Observe the House LED

When the motor reaches sufficient rotational speed, the generated electrical output may cause the white LED on the house to glow.

Step 6 — Record the Conditions

Students can note:

• Distance from the external fan
• Fan-speed setting
• Propeller angle
• Approximate brightness of the LED
• Whether repositioning improved the response

Demonstration 2 — Battery Fan and House Light Mode

Step 1 — Stop the Passive Demonstration

Move the model away from the external fan and allow the propeller to stop.

Step 2 — Check the Model

Ensure:

• The propeller is unobstructed
• The battery connector wires are not touching each other
• Hands and loose clothing are away from the propeller

Step 3 — Connect the Battery

Attach one fresh 9V battery to the battery snap connector.

Step 4 — Observe Both Outputs

The battery should:

• Rotate the DC motor and propeller
• Power the white LED on the house

The propeller functions as an electric fan while the house light illuminates.

Step 5 — Disconnect After Use

Disconnect the battery immediately after completing the demonstration.

Do not leave the battery attached during storage or while the kit is unattended.

How Windmill Generator Mode Works

A permanent-magnet DC motor can operate in two related ways.

When electrical energy is supplied to it, it functions as a motor and produces rotation.

When its shaft is rotated mechanically, it can produce a small electrical output and function as a generator.

In the passive mode:

1. Moving air reaches the propeller.
2. The propeller begins to rotate.
3. The rotating propeller turns the motor shaft.
4. Motion occurs inside the motor’s magnetic system.
5. A small electrical output is produced.
6. Current passes through the LED circuit.
7. The house LED may glow when sufficient output is generated.

The demonstration represents:

Kinetic Energy of Air → Mechanical Energy → Electrical Energy → Light Energy

How Battery Fan and House Light Mode Works

When a 9V battery is connected:

1. Electrical energy enters the pre-wired circuit.
2. Current reaches the DC motor.
3. The motor shaft rotates.
4. The propeller produces visible mechanical motion and airflow.
5. Current also passes through the LED branch of the circuit.
6. The resistor limits current to the LED.
7. The white house light illuminates.

The demonstration represents:

Chemical Energy in the Battery → Electrical Energy → Mechanical Energy + Light Energy

The motor and LED operate together because they are connected within the integrated circuit.

The Role of the 22-Ohm Resistor

The white LED requires controlled current during battery-powered operation.

The pre-soldered 22-ohm resistor helps limit current passing through the LED branch of the circuit.

Without suitable current limitation, excess current could damage the LED.

The resistor therefore helps students understand that practical circuits often include components that protect or regulate other components.

Why the Two Modes Matter

Many simple windmill models demonstrate only one operating condition and may depend entirely on strong external airflow.

This 2-in-1 model supports two related demonstrations:

This allows students to compare:

• Mechanical-to-electrical conversion
• Electrical-to-mechanical conversion
• Generator operation
• Motor operation
• Passive and powered systems
• Renewable-energy concepts
• Electrical-load operation
• Simultaneous mechanical and luminous output

Understand the Complete Functional System

From Wind to Light

In the passive demonstration, the student can follow the complete sequence:

Airflow

A moving air stream reaches the four-blade propeller.

Rotation

The propeller captures part of the airflow and rotates.

Generator Action

The rotating shaft drives the DC motor mechanically.

Electrical Output

The motor produces a small electrical output.

Circuit Response

Current passes through the resistor and LED circuit.

Visible Result

The LED on the house may glow when the generated output is sufficient.

From Battery to Motion and Light

In the active demonstration:

Battery Input

The 9V battery supplies electrical energy.

Motor Response

The DC motor rotates the propeller.

Fan Action

The propeller creates visible rotation and airflow.

Lighting Response

The house LED receives current through the protected circuit.

Simultaneous Output

The motorized fan and house light operate together.

Test. Observe. Discover.

Students can perform supervised comparisons such as:

Test 1 — Fan Distance

Move the external fan closer to or farther from the propeller.

Observe how the propeller speed and LED response change.

Test 2 — Airflow Angle

Change the angle between the model and the external fan.

Observe which position produces the best rotation.

Test 3 — Fan-Speed Setting

Compare different external-fan speed settings.

Record when the LED first begins to glow.

Test 4 — Passive and Active Modes

Compare:

• Passive generator operation without a battery
• Active motor and light operation with a battery

Test 5 — Battery Condition

Use a fresh battery and observe the fan and LED response.

A weak battery may result in slower rotation or reduced LED brightness.

Test 6 — Propeller Alignment

Observe whether the propeller rotates freely and evenly.

Do not operate a damaged, obstructed or badly misaligned propeller.

Learn Through Every Demonstration

The kit supports students in practising:

• Component identification
• Careful observation
• Energy-pathway explanation
• Mode comparison
• Generator and motor differentiation
• Battery connection and disconnection
• Airflow alignment
• Cause-and-effect reasoning
• Basic circuit understanding
• Troubleshooting
• Safe demonstration practice
• Project presentation and viva explanation

Explore Key Concepts

• Wind energy
• Renewable-energy concepts
• Mechanical energy
• Electrical energy
• Light energy
• Energy conversion
• DC motor operation
• DC generator principle
• Electromagnetic induction
• Propeller and rotor motion
• Motorized fan operation
• LED circuits
• Current limitation
• Battery-powered circuits
• Simultaneous electrical loads
• Observation and experimentation
• Sustainable-energy systems
• Proof-of-concept engineering

One Model. Multiple Learning Outcomes.

Students can use the same model to investigate:

• How wind can create rotational motion
• How rotation can produce electrical output
• Why the LED needs sufficient generated voltage
• Why the airflow angle affects performance
• How a DC motor can act as a generator
• How a battery makes the motor rotate
• Why the house LED glows in both modes
• How the resistor supports the LED circuit
• What changes between passive and active operation
• Why real wind-energy systems require additional equipment

Built for Confident Demonstration

The assembled format is suitable for:

• School science projects
• Educational working-model presentations
• Science exhibitions
• Classroom demonstrations
• Renewable-energy lessons
• Energy-conversion lessons
• STEM activities
• Physics presentations
• Practical assessments
• Project reports
• Viva and oral explanation
• Supervised home learning

The visual model allows students to point to the airflow source, propeller, motor, resistor, LED and battery connector while explaining the complete process.

Suggested Student Explanation

“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.”

Build Upon the Foundation

After understanding the model, students may explore more advanced topics such as:

• Wind-turbine blade design
• Generator efficiency
• Rotational speed
• Voltage generation
• Wind direction
• Aerodynamic blade angles
• Battery-powered motor systems
• Series and parallel circuit concepts
• Voltage and current measurement
• Energy storage
• Charge controllers
• Wind-farm planning
• Hybrid renewable-energy systems

Additional equipment, measurement instruments, components and safety controls would be required for expanded experiments.

This Concept Can Also Be Used to Explore

Wind-Energy Systems

Wind turbines use moving air to produce rotational motion.

Electric Motors and Generators

A DC motor can demonstrate both powered rotation and small-scale generation.

Sustainable Infrastructure

Renewable-energy systems can contribute to broader discussions about electricity generation and community infrastructure.

Rural and Urban Energy Concepts

The house model provides visual context for discussing how generated electricity may supply a load.

Energy Efficiency

Students can discuss how energy is transferred and why losses occur during every conversion stage.

Electrical Protection

The resistor demonstrates the importance of controlling current through sensitive components.

Concept, Learning-Approach and SDG Connections

The Windmill Generator Kit can support:

• Experiential learning
• Inquiry-based learning
• Project-based learning
• STEM education
• Conceptual understanding
• Observation and problem solving
• Technological literacy
• Renewable-energy awareness
• Guided classroom demonstration

The project may be discussed in relation to broad educational themes connected with:

SDG 7 — Affordable and Clean Energy

The passive mode introduces the concept of electricity generation using airflow and renewable wind energy.

SDG 11 — Sustainable Cities and Communities

The house-light demonstration can support discussions about sustainable energy systems and community infrastructure.

SDG 13 — Climate Action

The model can introduce conversations about renewable-energy technologies and reduced dependence on conventional energy sources.

These are broad educational connections only and do not represent official SDG certification, approval or verified environmental performance.

A Complete Learning Journey

The Windmill Generator Kit guides students through:

Identify → Position → Generate → Power → Observe → Compare → Troubleshoot → Explain

By the end of the guided activity, students should be better prepared to explain:

• How airflow turns a propeller
• How rotation can drive a DC motor as a generator
• How electrical output can operate an LED
• How a battery powers a motor
• How the same battery powers the house LED
• Why a resistor is used in the LED circuit
• Why airflow strength and direction affect performance
• How the two operating modes differ
• How energy changes form throughout the model

Important Educational and Usage Information

• This is a pre-assembled educational proof-of-concept model.
• Suggested for Grades 7–12.
• Adult or teacher supervision is recommended.
• Use the model on a clean, dry and stable surface.
• Keep fingers, hair, jewellery and loose clothing away from the spinning propeller.
• Do not touch the propeller while it is rotating.
• Do not obstruct or deliberately stall the motor.
• Keep wires clear of the propeller.
• Do not short-circuit the battery connector.
• Connect only one suitable 9V battery during the guided active demonstration.
• Do not connect the model to AC mains electricity.
• Disconnect the battery immediately after use.
• Never leave the battery connected while the kit is unattended.
• Do not use near water, moisture or conductive surfaces.
• Do not pull the wires, LED or battery connector.
• Handle the miniature house and wooden pillar carefully.
• Store the model in a cool and dry location.
• An external high-speed fan may be required for passive generator mode.
• The external fan and 9V battery are not included.

Troubleshooting Guide

Stop using the model if any component becomes excessively hot, damaged, loose, produces an unusual smell or shows signs of electrical failure.

Product Appearance and Assembly Note

This educational working model is assembled in small batches.

Minor variations may occur in:

• House colour or printed finish
• Roof pattern
• Grass-mat shade or texture
• Base-sheet finish
• Wooden pillar colour and grain
• Propeller colour or shape
• Motor finish
• Motor-mount appearance
• LED position
• Resistor brand or colour bands
• Wire colour or length
• Battery-snap colour
• Screw type
• Component placement
• Adhesive or fastening finish

These variations may occur because of manufacturing, component availability and assembly updates and do not necessarily alter the intended demonstration.

Images/creative illustration are for reference. Actual product may vary due to manufacturing, component availability & assembly update.

Important Product Limitation

This is a simplified educational proof-of-concept model.

It is not intended or certified as:

• A household wind-power system
• A commercial wind turbine
• A municipal power-generation system
• A battery charger
• An energy-storage system
• A household appliance
• A finished consumer fan
• A commercial lighting system
• A weatherproof outdoor product
• A calibrated generator
• A voltage, current, wind-speed or efficiency measurement instrument
• A substitute for professional renewable-energy equipment

Passive-mode performance depends on airflow strength, airflow direction, distance from the fan, propeller alignment, motor characteristics, LED requirements and component variation.

Commercial 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.

Return, Refund and Exchange Notice

This 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.

References and Educational-Mapping Notice

References 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.