This is part of the series of 30 exercises developed during the 3D4KIDS program. One of the aims of this Erasmus+ program is to improve the knowledge of teachers regarding the 3d printing technology by developing some specific training materials. More info in the website: https://www.3d4kids.eu/ During this project, students will learn how to create the most effective wheels (Size, depth, weight) for their cars to ensure the fasted time when cars are used in the Race.