All tasks

Check

Find the mistake

Find the mistake shows someone's worked answer with one common error in it. Pupils find the wrong step, fix it and explain.

The real slide Chalk makes, in the Classroom look. Every word is written for your lesson when you use it.

How to run it

  1. Pupils find the wrong step alone.
  2. They write the right version.
  3. Ask why someone might make that mistake.

Why it works

Studying incorrect examples alongside correct ones helps pupils understand the idea, not just copy the steps.

Good evidenceBooth et al., 2013Algebra by Example research

In other subjects

English: a paragraph with one wrong use of a semicolonScience: a method with one flawed step
Use in Slides

Chalk plans a deck with this task in it, written for your lesson.