Cooling Fan
Key Objectives
In this lesson, you will:
- Build a LEGO model
- Connect your model to your device
- Program the motor to turn at different speeds
![cooling-fan-image](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt3d8a781f3af842b5/5ebe9fc9f8b8c35280daef5f/cooling-fan-image.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Explore
1. Introduction
It is a hot day. Max and Mia’s science lab is too warm.
They want to build a fan to cool down the science lab.
Max and Mia need your help!
![cooling-fan-connect-image](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt39f9f36acd088071/5ebe9fcdab6c6a270bff08e2/cooling-fan-connect-image.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Create
2. Build your model
![cooling-fan-instructions-preview](https://assets.education.lego.com/v3/assets/blt293eea581807678a/bltbc27843003e7fd1a/5ebe9fcd2238e044d39c4a35/cooling-fan-instructions-preview.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
3. Connect your model to your device
![connection-to-smarthub-guide-image](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt994b5a200dadd5dd/5ebe9fcb6b4f987c36cd6fcc/connection-to-smarthub-guide-image.jpg?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
4. Program your model
Make the fan turn.
- Create the program as shown.
- Explain to each other how the fan works.
![cooling-fan-program-final](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt8ae5045181b34f4d/5ebe9fcb401560610eb6e4fb/cooling-fan-program-final.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
5. Help Max and Mia further (optional):
- Make the fan turn at different speeds. Then make it stop.
- Program the fan to do other things.
![investigate-more-image](https://assets.education.lego.com/v3/assets/blt293eea581807678a/bltcda722dfbc38ca86/5ebe9fcae806087c31d65ca9/investigate-more-image.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
Congratulation
You did it!
![celebration-screen-for-lessonplans-image](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt488130adb0de85cc/5ebe9fca6b04f30466626ab8/celebration-screen-for-lessonplans-image.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)