This 90-minute GCSE Astronomy lesson introduces exoplanets through clear explanation, visual models, real examples and guided comparison. Teach the transit and radial velocity methods as complementary ways of detecting unseen planets, checking understanding regularly through questioning, graph interpretation and short discussion tasks. Emphasise the evidence each method provides, the limitations of detection, and the meaning of the habitable zone without implying that habitability proves life exists. Support learners with step-by-step diagrams, key vocabulary and structured prompts, while extending confident learners through evaluation of method reliability and planetary suitability for life.
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