1
3D shapes all around us
Learner’s Book 1: Unit 2, pp. 37–38
GoalKnow that a 3D shape is solid and can be picked up, and name a cube, a sphere and a cylinder.
New words
3D shape · a shape you can hold; it is not flatcube · a 3D shape like a dicesphere · a 3D shape that is round all over, like a ballcylinder · a 3D shape like a tin can
Explanation
Houses, schools, boxes and balls are all 3D shapes. They are everywhere around us. A 3D shape is solid: you can pick it up and turn it round. A cube is a shape like a dice, with square sides. A sphere is round all over, like a ball. A cylinder is like a tin can, with a flat top and bottom and a curved side. Learn the three names: cube, sphere and cylinder.
| cube | sphere | cylinder |
|---|---|---|
| dice | ball | tin can |
Worked examples
A dice is a cube. All its sides are flat squares.
A ball is a sphere. It is round all over.
A tin of beans is a cylinder. It has a flat top, a flat bottom and a curved side.
Class activity
Shape hunt: find three things at home. One should look like a cube (a box or a dice), one like a sphere (a ball or an orange) and one like a cylinder (a tin or a cup). Hold each one in your hand and say its name.
Practice
1
What is the name of this shape?
sphere
2
What is the name of this shape?
cylinder
3
Name two things at home that are shaped like a cylinder.
For example a tin, a cup, a roll of paper, a tube.
4
Can you pick up a 3D shape and turn it round?
Yes.