18
CLIL Math: what 3-D shapes can you see?
Textbook: pp. 32–33
GoalName 3-D shapes: sphere, cylinder, cone, cube, pyramid, and find them in buildings.
New words
sphere · sharcylinder · silindrcone · konuscube · kubpyramid · piramida
Explanation
A 3-D shape is a solid shape (it has length, width and height). A sphere is like a ball with no flat face. A cylinder has two flat circles and a curved side (like a can). A cone has one circle for a base and a point at the top (an ice-cream cone). A cube has six equal square faces (like a dice). A pyramid has a base and triangle sides (like the pyramids of Egypt). A cube has 6 faces and 12 edges. Look for shapes in buildings: “The tower is a cylinder.”
Worked examples
The roof of the tent is a cone. The water tank is a cylinder.
A dice is a cube. A football is a sphere.
Class activity
“Shape hunt”: find 3-D shapes in the room or on the street. For each find say “The bin is a cylinder.” Fill in a table: shape – object.
Practice
1
The 3-D shape that looks like a ball:
sphere
2
How many faces does a cube have?
6
3
Which shape is an ice-cream cone?
cone
4
Make a sentence: a can is a cylinder.
A can is a cylinder.