Constructions & Loci | OCR GCSE Higher Maths | 40 Worked Examples (J560)

Forty fully worked, mark-scheme-annotated questions on Constructions and Loci for OCR GCSE (9-1) Higher Mathematics (J560, content references 8.01f and 8.02a-d). Every solution breaks the method down to one step per line, with a right-margin note on each line and OCR-style M/A/B marks folded in on the real mark-scheme lines, including the dependent shading mark. The four standard ruler-and-compass constructions are covered (perpendicular bisector, angle bisector, perpendicular from a point to a line, perpendicular at a point on a line), then the four fundamental loci (circle, perpendicular bisector, racetrack, angle bisector), building up to combined-region problems, scale drawings, bearings and circumcircles. Progressive difficulty runs Easy to Challenging (15 / 14 / 11), and every construction and region is drawn as an inline diagram with the construction arcs left visible. Built for OCR specifically: OCR provides no formula sheet, so the pack opens with the loci facts a candidate must know cold, marks constructions by eye to a tolerance of about 2 mm and 2 degrees, and hammers the exam-technique point that a ruled line with the arcs rubbed out loses a mark. Ideal as a revision handout, homework set, or tutor resource.