Lesson 73: nets
Lesson 73 Learning Objectives:
Build pyramids and prisms from nets
Identify correct and incorrect nets
Add missing faces to nets
Draw nets for square/triangular prisms or pyramids
Embedded Files
Math Talk:
See Math Talk image below
Reflect:
*Reflect in your math journal. Draw, create or write to share your thinking. See Lesson guide 73 for more reflection questions, real life anchoring, playful explorations and creative invitations.
Two nets are both supposed to make a square pyramid. One has 4 triangles and a square. The other has 5 triangles. Could both be right?
If a net is missing one face, will it form a closed 3D shape? Why or why not?
Does every flat shape want to fold into something? Or only special ones? Why?
How can you tell if a net is “possible” before folding it? What clues are in the pattern?
Why do you think there are many different nets for the same shape? What does that tell us about space?
If you could “unfold” your lunchbox (or another real container), what net would it make?
Math Talk:
Have a conversation about this image. Be curious. Be creative. Can you see in different ways?
What do you notice about these shapes? Which one doesn't belong? Why?
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