Immediate feedback
Know straight away whether it was right, and why.
Practice
Practice → feedback → improvement
Nothing exotic here, and that is the point. Practice is focused question work you can aim precisely — at one topic, one level, one curriculum — with immediate feedback and an explanation ready for anything you miss.
Which expression is equivalent to x² − 9?
(x − 3)²
(x − 3)(x + 3)
Correct
x(x − 9)
Difference of two squares. Want three more like this, or the full explanation from the lesson?
Illustration of a practice question.
How you use them
Aim the practice, don't just do more of it
Volume of questions is not what moves a grade — hitting the right questions is. Practice is filterable so revision time lands where the marks actually are.
- Practise by subject
- Practise by topic
- Practise by level — beginner through advanced
- Practise by curriculum
- Practise by course structure, following how the material is taught
AI explains the misses
From the reviewed content, with a hint first.
Keep working the weak spots
More of the type you're getting wrong, not more of everything.
Assignable by schools
Teachers can set a test set as homework and see the results.
Published now
Practice sets live on CyOku
Reviewed by expert editors before publication.
Practice
Targeted question practice by topic and level.
Find out what you actually know
Create an account, open a practice set, and work a topic until the feedback stops surprising you.
Free to create an account. Selected free courses are available once you sign in.