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 Roughly how many minutes of real learning does an hour of INTERRUPTED study produce?
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About 20 minutes — roughly a third of what an uninterrupted hour gives you.
2 What is the hard ceiling for studying without a break?
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90 minutes. The brain needs recovery; past that, extra time yields almost nothing.
Level 2 · Core
3 Which situation describes PRODUCTIVE struggle?
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Slow progress with occasional insight = productive struggle — keep going. The others are spinning: change tactics.
4 You want to study 5 days a week. What does the buffer-day idea suggest scheduling?
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Schedule 6. Life takes one and you still hit five — turning an ordinary week into a success rather than a failure.
Level 3 · Challenge
5 You missed one day. What does the recovery protocol say NOT to do?
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Do not double up. Just resume normally — catch-up marathons are unsustainable and often cause the next miss.
6 A student studies with their phone face-down on the desk and reports "two hours of study" with about six phone checks. Roughly how much deep learning is plausible?
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Around 40 minutes or less. Six interruptions cost more refocusing time than the session contains — the phone belongs in another room.