The document explains the concept of nets, which are 2D patterns that can fold into various 3D shapes, and highlights their importance in understanding solid figures, such as cubes, prisms, cylinders, cones, and pyramids. It provides insights into identifying and constructing nets, including common mistakes to avoid and real-world applications in fields like packaging design and architecture. The document encourages practical engagement through drawing and identifying nets in everyday life.

1. NETS OF SOLID FIGURES:
UNFOLDING 3D SHAPES

2. LEARNING COMPETENCIES
● Identify the nets of different
solid figures.
● Construct nets of different
solid figures.

3. What are Nets?
● A net is a 2D pattern
that can be folded to
create a 3D shape
● It's like "unfolding" a 3D
object and laying it flat
● Nets show all the faces
of a solid figure
● Can you think of any
real-life examples where
you've seen nets?

5. Why Learn About Nets?
● Helps understand the structure of 3D
shapes
● Useful in packaging design and
engineering
● Improves spatial reasoning skills
● How do you think nets might be used
in everyday life?

6. Common Solid
Figures
● Cube
● Rectangular prism
● Cylinder
● Cone
● Pyramid
● Can you name any
objects around you that
have these shapes?

7. Net of a Cube
● A cube has 6 square faces
● Its net shows all 6 squares
connected
● There are 11 different nets for a
cube
● Try drawing a net of a cube on

8. Net of a Rectangular
Prism
● Has 6 rectangular
faces
● Net shows 2 large
rectangles (top and
bottom)
● And 4 smaller
rectangles (sides)
● How is this net
different from a

9. Net of a Cylinder
● Has 2 circular faces and
1 rectangular face
● Net shows 2 circles and
1 rectangle
● The rectangle wraps
around to form the
curved surface
● What everyday objects
can you think of that are
cylindrical?

10. Net of a Cone
● Has 1 circular face and 1 sector
(part of a circle)
● The sector forms the curved surface
when folded
● The size of the sector determines
the cone's height
● Can you imagine how this net folds
into a cone?

11. Net of a Pyramid
● Has 1 square base and 4
triangular faces
● Net shows 1 square
connected to 4 triangles
● The triangles fold up to
meet at the top
● What famous structure
do you know that's
shaped like a pyramid?

12. Identifying Nets
● Look at the shape and number of
faces
● Check if the faces can connect
properly
● Imagine folding the net in your
mind

13. Practice: Identify the
Net
● Look at the nets
shown
● Try to identify which
solid figure each net
creates
● Discuss your
answers with a
partner

15. Constructing Nets: Materials
● Paper or cardstock
● Scissors
● Ruler
● Pencil
● What other materials might be
useful for making nets?

16. Steps to Construct a Net
● Choose a solid figure
● Identify its faces and their shapes
● Draw the faces connected to each
other
● Cut out the net
● Fold along the lines to check if it forms
the shape
● What might be challenging about

17. Tips for Drawing Nets
● Start with the base shape
● Add other faces one by one
● Make sure faces are connected
correctly
● Double-check measurements
● What strategy would you use to
draw a net?

18. Common Mistakes to Avoid
● Forgetting a face
● Incorrect face sizes or shapes
● Faces not connected properly
● Can you think of any other
potential mistakes?

19. Real-World
Applications
● Packaging design
● Architecture and
construction
● Paper craft and
origami
● Where else might
understanding nets
be useful?

20. Review: Key Points
● Nets are 2D patterns that fold
into 3D shapes
● Each solid figure has its own
unique net(s)
● Nets show all faces of a solid
figure
● Understanding nets helps in