Practice

One question at a time, and you know at once why you missed it

Practise exactly what you want

Pick a topic, a whole chapter, or a module across chapters; choose 10, 20 or 30 questions, ordered easy to hard, and nothing you did in the last 7 days comes back.

Free students: practise topics already started, at most 2 at a time
Premium plan: whole chapters and cross-chapter practice, unlimited each day

Pick topicsPick a few in a chapter, or practise the whole chapter

Practise a module across chaptersFor example the “Functions” module: chapters 3 to 6

How many questions in this set

1020Recommended30Your own

See right or wrong and the explanation at once

Every question has a step-by-step explanation, and the last step names the common mistake. Still stuck? Ask the AI study partner: it answers from this section’s lesson and cites its source.

Wrong answerSaved to the mistake book

Explanation: every step spelled out, the last one the common mistake

AI study partnerWhy did I get this wrong?

Finish a set and see your weak spots at a glance

Right and wrong are counted by this section’s learning goals; anything under 60% is marked red, and one tap takes you back to the part that teaches it.

Set finishedSample

7 / 10 correct9 min 12 sec · 55 sec per question on average (about 75 sec in the real exam)

Find a trig value from a point on the terminal side4.2, part 24 / 4

Reduce the angle to 0°–360° and evaluate4.2, part 32 / 3

Judge the sign of a trig value4.2, part 3 · go back over this part1 / 3

Mistakes are not wasted

Wrong questions go to the mistake book and come back tomorrow, after 3 days and after 7 days; the last two use new questions of the same kind, so you know it is really learned.

Premium plan includes it; free students can already have their mistakes recorded.

TomorrowSame question once more
After 3 daysA new question of the same kind
After 7 daysA new question of the same kind — get it right and it counts as mastered

One question proves nothing.
Sign up and practise in sets built from your weak spots.

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