Make a cantilever that can hold 5 marbles at least 12 inches away from its base structure with this engineering challenge. The site contains the challenge, a lesson plan, tips, and a place for students to document their engineering process.

This is an inquiry based cooperative learning unit that can be used in biology as a graduation exam review or in botany for a nine week project. The students will learn the life cycle of mosses, ferns, gymnosperms and angiosperms. The...