1. Sketch three chairs, one that can be classified as a solid structure, one as a frame structures and one as a shell structure.
2. Build a model of each chair with nothing but toothpicks and modelling clay. Try to build the chairs the same size.
3. Design a way to test the ability of each chair to support weight.
4. Decide which chair supports the most weight.
Answer the following questions (remember APE):
a) What did you notice about the use of materials when you built solid structures, frame structures and shell structures?
b) Which type of structure was best able to support weight?
c) What generalizations can you make about solid, frame and shell structures?