How Teaching Someone Else Can Reveal What You Actually Understand

One of the best ways to discover whether you really understand something is to try teaching it to someone else. A student might feel confident after reading their notes or completing familiar questions, but explaining a concept in their own words provides a much stronger test of understanding. At First Education, we encourage students to move beyond finding the right answer and think about whether they could explain how and why it works.

Teaching forces students to organise their knowledge. Instead of simply recognising information on a page, they need to decide what is important, explain it clearly and connect different ideas together. If they understand a concept deeply, they should be able to describe it without simply repeating their textbook or notes.

The process can also reveal gaps that students did not realise they had. A student might confidently begin explaining a topic before reaching a point where they cannot justify a particular step or answer a follow-up question. Rather than being a failure, this is useful information. It shows exactly where their understanding needs strengthening.

This strategy works across almost every subject. A maths student could explain why a particular method works rather than simply demonstrating the steps. A science student could teach a process using their own words, while an English student could explain why a particular interpretation of a text is convincing. The more clearly students communicate their reasoning, the more confidently they can apply their knowledge independently.

Tutoring naturally creates opportunities for this type of learning. Tutors can ask students to explain a concept back to them, justify an answer or talk through a solution step by step. These conversations help identify misunderstandings while encouraging students to become more independent thinkers.

Students can also use this technique outside tutoring. Explaining a topic to a parent, sibling or friend can turn revision into an active learning exercise and reveal which areas still need attention.

Sometimes the best test of whether you know something is not whether you can answer a question, but whether you can teach someone else how to answer it.