2-min Fluency Warm-up — Faces in a flash!
Faces on a cube:
Vertices on a cube:
Faces on a sphere:
Vertices on a cone:
A net is a solid unfolded flat — like unwrapping a box! Draw a line from each net to the solid it folds into.
Nets
Solids
Show Two Different Ways — How can you tell the cross-shaped net folds into a cube and NOT a pyramid?
Ideas: count the faces in the net; look at the SHAPE of each face.
Way 1:
Way 2:
Read carefully. Think about what is happening.
A cereal box is a rectangular prism. Kim unfolds it flat to recycle it. How many rectangle faces will she see in the flattened box?
My thinking:
faces
A pyramid net has 1 square and 4 triangles. If Ben cuts out 3 pyramid nets, how many triangles does he cut in all?
My thinking:
triangles
Create Your Own Net
Try to draw a net for a cube that is DIFFERENT from the cross shape above. (There are 11 different cube nets!) Remember: exactly 6 squares.
Bonus: cut it out and try folding it. Did it work?