Measurement Nets
Figure 9: Arrays forming geometric nets
The interesting thing about folding nets is that it helps us to transition from two-dimensional rectangles (see figure 9) into a three-dimensional geometric solid. It’s a way for developing the idea that boxes can be made in this way. It is also an activity that helps develop comprehension through hands on activities and manipulative units. Cardboard boxes often come folded flat, as sort of doubled nets, and you make the box by unfolding and taping edges together to make the 3D shape. Rectangles can have any side length, any width but we are going to have a condition using only whole number lengths of sides of arrays.
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