This is an open-ended investigation where students design their own experiments to test the strength of different packaging materials. Students should be encouraged to develop scientific experiments appropriate to their level. Activity Students discuss whether strength is a requirement in packaging. Students collect a range of packaging materials to test.
Students work out ways to test the strength of different materials.
Then they design some experiments to compare different materials. Allow students to experiment freely without the constraints of a set protocol. Also, be very careful with sharp edges on metal cans. Discussion Students give brief reports or demonstrations to the rest of the class, describing their experiments and the results. For secondary students Set up properly controlled and replicated scientific experiments where students need to identify and control experimental variables.