This resource includes 2 different options (a PreK-2nd and a 3rd-5th) for testing and designing an Olympic Bobsled prototype! 1. Students will learn about and research the Olympic sport of bobsledding. Then, students will test various materials and conclude how friction affects the basic bobsled's design. 2. Students will test different masses (number of weights or "people") in a bobsled and test different places to add mass too. They will see how mass affects the speed of the bobsled and how m