“Crazy Contraptions” is a thought provoking activity that engages students in the design and construction of exciting and innovative Rube Goldburg style mechanisms. The comprehensive Crazy Contraptions Activity Guide facilitates the conceptualization, understanding and application of simple and complex machines. Each Crazy Contraption requires a 12"x12" wood base with drilled holes. You can purchase the Crazy Contraptions Base from TeacherGeek or make the base using the template from the documents below.