Ring:bit expansion board: A simple board to which the micro:bit can be attached. Kids can build 6 different shapes including a traffic light, catapult, stroller, smart desk lamp, windshield wiper or air conditioner. Well-thought-out building instructions and lessons: This is an interesting way for children to learn both programming and building with building blocks. This Micro-Bit kit contains almost 200 pieces: With these building blocks you can build even more different shapes. FALL DEMONSTRATION BY INDEPENDENT PROGRAMMING Catapult: When button A is pressed, the catapult executes the start command and automatically returns to its original starting state. Stroller: Pressing buttons A and B will cause the stroller to move at full speed; with button A you can drive to the right at full speed; with button B you can drive to the left at full speed; looking down you can drive backwards at full speed; and you can stop the car by shaking it. Windshield Wiper: When button A is pressed, the windshield wiper starts working; when button B is pressed, the windshield wiper stops working. Air conditioning: If the temperature is over 28 degrees, the fan rotates; if it is below 26 degrees, it stops. Traffic light: When turned on, the red LED lights up for 3 seconds, then the yellow LED lights up for 1 second and the green LED lights up for 3 seconds. Smart Desk Lamp: It turns on automatically when the ambient light is low.