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In a small paper library on an island, a mother reads a slim guide in an armchair under a warm lamp while her son stands on a step stool to take a book from the shelf.

Insight · Mastery · 5 min read

“Really gets it”: what mastery means and how to tell

Parents say “really gets it”. Teachers say mastery. Here’s what we mean by it, and how you can spot it at home.

Theme · Mastery and math

StatusIn preparation · the full piece will follow our opening

More than getting it right once

A child can get a question right by following steps they don’t understand. Mastery means they can do it reliably, explain why it works, use it in a new situation and still do it weeks later. That’s a higher bar, and it’s the one that makes the next grade easier.

How we check

A mastery check is short. It asks your child to solve, explain and apply, often with a question that looks different from the ones they practised. If something is shaky, we go back to it now, while it’s small, rather than moving on and hoping.

Mastery means reliable, explainable and lasting.

The short version

How to tell at home

Ask your child to teach you. If they can explain a skill in their own words, show you an example and tell you where people usually go wrong, they probably really get it. If they can only repeat the steps, it may need more time, and that’s fine.

What you’ll take away

  1. 01Mastery means reliable, explainable and lasting.
  2. 02We move on when a skill is secure, not when the calendar says so.
  3. 03Ask your child to teach you.

Every child deserves to be known. Let’s start with yours.

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