๐ Unsolved Mysteries
Students read a detailed article about three of the world's most famous unsolved mysteries: the Bermuda Triangle, the Nazca Lines of Peru, and the Dyatlov Pass Incident in Russia. Each mystery naturally embeds modals of deduction as experts and researchers speculate about possible explanations. Grammar focus covers must (almost certain), might/may (possible), could (one option among many), and can't (almost certain it's NOT true), for both present and past deductions. The interactive game presents 10 detective-style clues where students must choose the correct modal deduction. The writing task asks students to write their own theory about a mystery or an imaginary scenario using modals of deduction.
Lesson Plan
- 3 warm-up questions about mysteries and the unexplained
Key Vocabulary
Grammar Points
- must + base verb: almost certain it IS true (He must be tired)
- might/may + base verb: it's possible (She might be at home)
- could + base verb: one possibility among several (It could be the cat)
- can't + base verb: almost certain it is NOT true (He can't be 80)
- must have + pp: past deduction (They must have left early)
- can't have + pp: past negative deduction (She can't have seen us)
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