10 years and up.

Pairs of students are challenged to build a slow car using a motorized LEGO® kit. Students begin with a bicycle-building activity which introduces the concepts of gearing down and gear ratios. They utilize this knowledge to design a car capable of low speeds. The cars are timed on a course to see how slow they can go, and students are encouraged to modify and alter their design throughout the lesson.

For Educators/ Parents:

See this article from the Journal of Research in Science TeachingPDF icon Reasoning about structure and function: Children’s conceptions of gears