Mathematics
Geometry
Procedural
11–13 yrs
Measuring angles (age 11+)
测量角度（11岁以上）
Description
Draw and measure line segments and angles accurately using ruler and protractor, and interpret scale drawings to extract real measurements
Mastery Evidence
- Draw a triangle accurately given two sides and the included angle (SAS)
- Measure angles in a geometric figure to the nearest degree using a protractor
- Read a scale drawing to determine actual lengths, explaining the scale used
Assessment Prompt
If your child is given an architect's floor plan where 1 cm represents 2 m, can they measure a room on the plan and work out its real-world dimensions?
