Mathematics
Geometry
Conceptual
7–8 yrs
Right Angles & Turns
直角与转向
Description
Identify right angles; recognise that two right angles make a half-turn, three make three-quarters, and four make a complete turn
Mastery Evidence
- Use a right-angle checker to identify right angles in shapes and the environment
- Classify angles as right angles, less than a right angle, or greater than a right angle
- Explain that 4 right angles make a full turn (360°)
Assessment Prompt
If your child looks at the corner of a piece of paper, can they tell you that's a right angle — and that spinning all the way round takes four right angles?
