Koa Koa takes you on a journey inside the world of objects to craft a pencil sharpener to discover pinion gears . Assemble the pencil sharpener using: spacers, bolts, screws, crank ... and of course pinion gears. But that's not all ! With this activity, you will familiarize yourself with recycling! You will need to collect an empty jar to make the tank. What are you going to learn? The operation of right angle gears Recycling: recovering instead of throwing away objects, diverting them from their original use to give them a second life. Box Size: 27 x 18 x 5cm