At PlusKids, maths happens with materials on the table, not just with an open exercise book.
In our interactive activities the children worked with odd and even numbers: how to recognise them and what tells them apart. The rule itself is learned quickly, but the part that matters is different — seeing with their own eyes that an even number splits into two equal groups, while an odd one always leaves something over. When a child checks it themselves, with counters or objects they can move around, the idea stays because it was understood, not memorised.
We then moved on to putting numbers in order, ascending and descending. This is where one of the typical confusions of the age appears: many children read each number correctly on its own, yet get tangled when they have to compare them and arrange them in a row. Ordering asks for something different from recognition — it asks you to hold several numbers in mind at once and decide, at every step, which is bigger. So we started with short sequences and lengthened them gradually, as the work became confident.
These look like small things, but almost everything that follows leans on them: carrying in addition, rounding, later on comparing large numbers. A child who arranges numbers in order without hesitating already has a clear picture of where they sit, and that shows in everything they do afterwards.
Every step was a small adventure, with games, short contests and mistakes mended on the spot — the most useful part of any maths lesson.