1. What in the World are Nets?

2. What do you think of when someone mentions a net?

3. Maybe you think of these?

4. Cooks Dancers Bunheads Hair Nets Inc.
1) Dancers and cooks often wear hairnets. 2) The bun makes a 3D shape called a Sphere. 3) If we were to spread the hairnet out flat, what 2D shape would the net make?
Cooks
Dancers
Bunheads Hair Nets Inc.

5. Let’s talk about, NETS in MATH ! ! !
Definition: A Net is a 2-dimensional pattern that you can fold to form a 3-dimensional figure. Example: Figure 1 Figure 2
Let’s talk about,
NETS in MATH
! ! !

6. I like it the way one teacher said it on the internet.
When you wrap a present, you’re working with nets.

7. Parts of a three-dimensional figure
Base(s)
the ends of a figure, not necessarily the top and bottom.

8. Parts of a three-dimensional figure
Faces
All flat sides of a 3-D figure.
This figure has 4 faces.
1 – the base
2 – the left side
3 – the right side
4 – the front

9. Parts of a three-dimensional figure
Lateral faces
All flat sides of a 3-D figure EXCLUDING the base(s).
This figure has 6 faces, but only 4 lateral faces.

10. Parts of a three-dimensional figure
Edges
Where two faces meet.

11. Parts of a three-dimensional figure
Vertex, (plural: vertices)
Where edges meet, (the corners or points)
This figure has 5 vertices!

12. Types of Three-Dimensional Figures
Prism
Pyramid
Named by base?
Shape of lateral faces?
# of bases
Yes
Yes 2 1

13. Identify the 3-D figure from the net.
Rectangular Prism

14. Identify the 3-D figure from the net.
Rectangular Pyramid

15. Identify the 3-D figure from the net.
Triangular Prism

16. Identify the 3-D figure from the net.
Triangular Pyramid

17. Let’s practice identifying a 3-D figure from a net.
Square Pyramid

18. Identify the 3-D figure from the net.
Cube

19. The End!