Hands-on challenge to build an unsinkable boat out of straws and plastic wrap that can hold twenty five pennies. Provides full list of materials with ideas on how to build, test, evaluate, and redesign it if necessary. Also, includes...

Students explore material properties in hands-on and visually evident ways via the Archimedes' principle. First, they design and conduct an experiment to calculate densities of various materials and present their findings to the class....