Investigate different shapes in order to determine which shape is strongest. With results from your investigation, design and construct a number of roofs to be placed on a previously built house. Then test the structures by pushing on the top of the roof.
Note: The lesson plan attached to this post was designed as part of a series of introductory WeDo lessons but is relevant to all building systems (i.e. RCX, NXT, EV3, …).