Author note — to cover

Rotate shapes through 90, 180 and 270 degrees about a given centre — origin, vertex or external point — with direction stated and tracing paper allowed; images congruent. Finding the centre of a given rotation sits with Describing a transformation; rotational symmetry of one shape is an earlier page. Both tiers. (G7)

• Fluency — direct questions on rotation, limited to this lesson's stated scope (4 questions).
• Application — use the same skill in unfamiliar or contextual questions without introducing a later method (4 questions).
• Check — questions built around the exclusions and likely misconceptions named in the lesson brief (4 questions).