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 During which activity does the brain consolidate (strengthen and file) new memories?
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Sleep — Queensland Brain Institute research shows sleep is essential for memory formation.
2 The brain runs mainly on oxygen and which fuel?
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Glucose — converted with oxygen into ATP, the brain's energy currency.
Level 2 · Core
3 A student plans a 4-hour non-stop study marathon. What does Fit to Learn suggest instead?
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Blocks with real breaks — attention returns sharper, and the spacing quietly adds a spaced-practice benefit too.
4 Why does studying while hungry work poorly, according to the framework?
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The brain burns ~20% of your energy and encoding is one of its most expensive jobs — an empty tank means weak encoding, not extra focus.
Level 3 · Challenge
5 The night before an exam, with one topic unrevised, the better choice is usually to…
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Sleep — the lost consolidation of a whole week's study costs more than one tired hour of extra cramming gains.
6 Which sequence best shows Fit to Learn supporting the OTHER three pillars?
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Sleep → questions → tests → teaching: a fit brain powers each of the other pillars in turn. Fitness never replaces study — it enables it.