This is one lesson from a Simple Circuit Unit that I created for middle school and high school students. It is fun and involves hands-on learning. For more cool hands-on engineering projects check out Machine Science (This is where I work).http://www.machinescience.org/catalog
Step 1: Simple Circuit Games Unit 1: Wire Loop Game
If you have ever been to a carnival or an amusement park, you may have seen or played a simple hand-eye coordination game involving a metal loop on a handle and a length of curved wire. In this game, the player holds the loop in one hand and attempts to guide it along the curved wire without touching the loop to the wire. In the carnival version, shown in Figure 1, the handle delivers a mild electric shock to the player when the loop and the wire touch, signaling that the game has been lost.
In this project, you will build your own wire loop game, using wires and batteries. In your game, players won't receive shocks if they lose. Instead, a buzzer will signal whenever the metal loop touches the curved wire. The wire loop game has two challenges. In Challenge 1, you will learn how electricity from a battery can be used to make sounds. In Challenge 2, you will build your own wire loop game and then play it.