10 Common Maths Misconceptions – Diagnostic Grids for GCSE Topics
One-page guides that turn common errors into teaching moments. This free Topic Diagnostic Grids PDF covers 10 GCSE topics: expanding brackets, solving equations, fractions, percentages, ratio, Pythagoras, angles, area and perimeter, averages and probability. For each topic: the misconception, what students write, what they should write, a quick fix activity and teacher notes. Use in your planner, on the staffroom wall, with trainees or in department meetings.
What's inside
- 10 one-page diagnostic grids – one per topic
- Tables: the misconception | what students write | what they should write | quick fix activity
- Teacher notes: why it happens, pre-teaching strategies, follow-up questions
- Bonus: 15-minute department meeting agenda
- Bonus: quick quizzes for expanding brackets and fractions (plus ideas for the rest)
- Feedback form and link to more free resources
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