A frequency tree splits a group into categories, then splits each category again. It is a GCSE-specific diagram that IGCSE textbooks skip, and a…
Two shapes are congruent if they are exactly the same shape and size. Edexcel tests this in two ways: naming the right condition (SSS, SAS, ASA, RHS)…
12 exam-style questions (37 marks), building from warm-up to grade 8–9. Show full working: Edexcel gives method marks even when the final answer is wrong.
An arithmetic sequence goes up or down by the same amount each time. Edexcel Higher goes beyond the nth term and asks you to add up the terms, which is…
12 exam-style questions (37 marks), building from warm-up to grade 8–9. Show full working: Edexcel gives method marks even when the final answer is wrong.
Full worked solutions to all 12 questions (37 marks), set out the way an Edexcel examiner wants to see them.
If you know the shape of y = f(x), you can sketch y = f(x) + 3, y = f(x − 2) or y = 2f(x) without plotting a single point. This page covers the four…
12 exam-style questions (32 marks), building from warm-up to grade 8–9. Show full working: Edexcel gives method marks even when the final answer is wrong.
Edexcel’s circle properties include two length results that most textbooks skip: the intersecting chord theorems. Each comes down to one multiplication…
12 exam-style questions (35 marks), building from warm-up to grade 8–9. Show full working: Edexcel gives method marks even when the final answer is wrong.
