Report a mistake

Spotted something wrong, like a typo, a wrong answer, a broken animation or a step that does not make sense? Tell me and I will fix it. Every report helps the next student.

The page 2021 Question 1: Name the plain-carbon steel band for torsion bars made with 0.3% to 0.5% carbon

Say where it is, for example “Step 3 of the marking guide” or “option (C) in the hints”, and what you think it should be.

Only if you would like to hear when it is fixed.