Mathematics
Geometry
Procedural
11–14 yrs
Coordinate Transformations
坐标变换
Description
Identify properties of translations, rotations, and reflections; describe and perform these transformations on given figures, and understand that the image is congruent to the original
Mastery Evidence
- Reflect a shape in a given mirror line (including diagonal lines) and state the coordinates of the image
- Rotate a shape about a given centre by 90° or 180° and describe the result
- Translate a shape by a given vector and verify that lengths and angles are preserved
Assessment Prompt
If your child is asked to rotate a triangle 90° clockwise around a fixed point, can they work out where each corner ends up — and confirm the triangle is still the same size and shape?
