Review of number of edges, vertices and faces for 3D shapes. Great interactive website at:
Minds On: Visualising
This act of visualising the folding of a net is one of the essential reasons for working with them, and is far more important mathematically than simply constructing solids from their nets.
Main task: Students were not shown the sketches below while they worked on the task. They had to independently figure out the number of nets by using Polydrons to make possible nets for a cube. Some students were convinced there were 10, 11 or 12 possible nets. The correct answer? There are 11 nets for a cube.
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