Same or different?

Two of these are twins. The rest only look similar.

MathAges 2–310 minutes3 pagesEnglish textInk-light

Being written

This one is planned but not finished yet. Everything below is what it will contain.

Not drawn yet

I can find the two that are exactly the same.

How the fifteen minutes go

The five steps on this sheet, in the order a child meets them. This is what you will actually be doing, not a description of the method.

Print the one that fits today. Same skill, three depths — and on this sheet they differ like this.

Support

Three items per row, the difference obvious.

Fewer items, more pictures, hints included, parent reads the instructions.

Core

Four per row, one small difference.

The standard task, recognition, practice and explanation.

Challenge

Five per row, and the difference is a single detail.

Open-ended. Explain why, make your own example, use it somewhere new.

The same guide that is printed on the back page, so you can read it before you decide to print anything.

The answers

Row 1: 1 and 4 · Row 2: 2 and 3 · Row 3: 1 and 3 · Row 4: 2 and 4

If they get stuck

Cover all but two items with your hands and ask only about those two. Then move the window along.

Common mistakes

Matching the first two that look alike and stopping. Ask them to check the others too.
Rushing. This is a slowing-down sheet; that is its value.

When they finish early

Spot-the-difference on any two similar objects in the room.