Two complete lessons with differentiated activities on discovering trig ratios at GCSE, including using a table of tangent ratios (before getting used to the calculator method). There is a practical activity to try as well as a problem solving activity taken from an OCR specimen paper. (The differentiation is labelled as shape groups from lowest ability to highest: triangle, square, parallelogram, trapezium, pentagon, hexagon respectively). Resources within the lessons are a mixture mixture of my own and other people's - happy to credit individuals if they let me know.
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