MathBrush
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P1 Seeing it move

copy a figure on a grid

Copy the shown corner-shaped three-segment figure on a square dot grid.

An L-shaped three-segment figure on a square dot grid.
One step of the worked solution to copy a figure on a grid, drawn in pencil.
5 steps, drawn in pencil

See all 5 steps

MathBrush is being tested with a few parent groups, and every solution on the site is open to them — one household, all children. If you were given a code, it goes in once and this device remembers it.

I have a code → See a free one like it

65 worked examples are free without a code, two from every pattern. No account, either way.

The pattern behind it: Seeing it move

Work out where the pieces land after a fold, cut or stack.

In this one. Counting grid steps preserves a figure’s side lengths and directions.

ABCDEFa straight strip of three: the two ends land opposite

How to spot it

Words like 'folded', 'cut along the dotted line' or 'stacked' appear beside a shape, and the question asks for a length or angle that only makes sense once the pieces are in their new positions.

Common mistake

Children try to calculate the answer before working out where the pieces actually end up, skipping the visualisation step that the whole question depends on.

Try one like it

Standard combine plane shapes Two equal squares are joined as shown. What larger plane shape do they make?
All 9 with this pattern →

The 33 problem patterns

All 33 patterns, one to a page — the 19 behind Primary 5 and 6 word problems, and the skills the younger years are built on. The bar model, how to spot it in the question, and the mistake children make. A booklet you can print. Free.

A PDF, and a note when new solutions go up.