Error correction worksheets or common mistakes handouts are special exercises that a typical student usually make when learning English. They are also grammar-based exercises which can be used to master the relevant grammar subject.If you're a learner, it'll be a great supplementary resource for you to realise typical mistakes in grammar subjects.
It’s best to use them when students have completed a long way in the relevant grammar concept. Hence, it’s best to use them in a revision lesson or an exam preparation lesson.
They can cover almost everything that can be confused by students. The sentences are taken from a large common mistakes corpus that my students constitute every year.
Most sentences look very natural and normal to students due to the fact that they do those mistakes too, so they are very challenging exercises. The best procedure is eliciting comments from students and making them discuss the sentences among groups. Do not jump on confirming the correct answer but wait for the proper justifications.