Wednesday, 13 June 2018

Unfolding pyramids

Bella showed us her "transformer" - how the triangle-based pyramid (also called the tetrahedron) can be transformed in two different ways.
So we tried with another shape, the square based pyramid. How many flat shapes could we transform this into (without breaking it into two pieces)?

This was another chance to try and "find them all" and also a great way to become more knowledgeable about 2D and 3D shapes.
We found eight ways. In K3G, here they are:
Actually, someone pointed out that two of these are the same, but just flipped over. Can you see which?

In K3L, we named them, and also voted on which ones were our favourites:

The next day, we looked closely at four of them, and asked which one doesn't belong? The two classes noticed very different things:
Afterwards, there was a little time for more open experimentation. It's great to see how fluidly the children are moving between 2D and 3D.

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