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Cards due

+1 from yesterday

Current level

Calc I · U2

Derivatives

Accuracy (7d)

86%

+4 pts

Time this week

2h 14m

Goal: 3h

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Last card: "d/dx (sin x)" — you said "cos x". Correct. 2 cards left in this lesson.

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Calculus d/dx (x³) = ? due 2h ago Review

Calculus ∫ 2x dx = ? due now Review

Physics F = m · a → solve for a due now Review

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Today's capsule: 3 derivative problems, 2 application problems — calibrated to your chain-rule gaps.

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days in a row

Keep it going — your longest streak is 12 days.

Finished lesson 1 of "What is a derivative?" 2h ago

Reviewed 12 cards in calculus — 92% accuracy yesterday

Coach session on chain rule (6 turns) yesterday

Workout: Projectile motion, all 3 parts 2 days ago