Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown.
Level 1 · Warm-up
1 The Feynman Technique is named after a famous…
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Physicist — Richard Feynman, legendary for explaining hard ideas simply.
2 While teaching without the book, you get stuck halfway. That stuck moment is…
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A located gap — the technique's whole purpose. You now know exactly what to re-study.
Level 2 · Core
3 Combining words with pictures when you explain gives memory two routes to the idea. This technique is called…
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Dual coding — verbal + visual encoding gives recall a second door.
4 Which of these counts as genuinely "teaching yourself"?
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Explaining aloud from memory — the book stays closed. Reading aloud just adds sound to recognition.
Level 3 · Challenge
5 Order the teaching loop correctly:
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Study → teach → catch stumbles → re-study → re-teach until the explanation flows. One pass is the diagnostic; the re-teach is the mastery.
6 Your friend explains a topic using long technical words but cannot answer your simple "but why?" question. The Feynman view of this is…
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Jargon can be camouflage. If it cannot be said simply — and survive a "why?" — it is not yet owned. Simple language is the hardest test a topic can face.