Pentagonal prismPentagonal prism

Triangular Triangular

pyramidpyramid

Square based

pyramid

A NET is when we unfold the A NET is when we unfold the

FACES of a 3D objectFACES of a 3D object

cubecube

Triangular prismTriangular prism

Homework: Act 1 p 138 no 1 & 4

No 1 try to make these nets at home

and fold it into a 3D object

No 4 Compare the nets with the 3d objects given

in question 4

Match them eg 4a looks like no 1q

Look again at

slides 2, 3,&

4 to help you

Day 2: Act 2 p 139 no 3

The 2D shapes

you can see in

each 3D object

Squares

Rectangles

Triangles

Hexagon

PentagonPentagon

Circle

Homework:

Day 3 Act 3 p 140 no 1 & 3

Day 4: Try to make 3d-objects

Use tooth picks and Prestik

or Jelly Tots

The amount of Tooth pics

you need for each object

will be referred to as Edges.

For instance use 12 Tooth pics

for the cube.

The amount of Prestik balls

you need will be referred to as

Vertices

For the cube you will need 8 balls

of prestik

Day 4 continue

Make the following 3D objects.

cube Rectangular

prism

Triangular

pyramidNo of

Toothpicks12 8 short (cut Tooth

pics in halve to make

the short sides)

4 normal size tooth pics

6

No of Prestik

balls8 8 4

Take a photo on your tablet of your complete

Tooth pic models

If you enjoyed making 3D models you can try to make

all the objects in the table on the last slide

12 122 18

8 6 91

Name surfaces Faces Edges Vertices

cube Flat only 6

squares

12 8

Rectangular

Prism

Trangular

Prism

Triangular

pyramid

Square based

pyramid

Cylinder

Cone

Sphere

3D objects and their featuresDay 5:

Complete this table

in your jotter

Edges = number of

tooth pics/sides

Surface = flat / curved

Faces = 2D shapes in

the object

Vertices = number of

prestic balls /corners