### Tangrams

Can you make five differently sized squares from the tangram pieces?

### Baked Bean Cans

Is there a best way to stack cans? What do different supermarkets do? How high can you safely stack the cans?

### Three Squares

What is the greatest number of squares you can make by overlapping three squares?

# Rectangles with Dominoes

### Why do this problem?

This activity is good for introducing pupils to the exploration of spatial mathematics. It allows the pupils some degree of freedom as to how they approach it and record their findings.

### Possible approach

Using something bigger than dominoes like giant lego (or just large dominoes) and initially introducing the challenge altogether will help learners 'get into' the problem. Pupils can then be left to find other rectangles, perhaps in pairs.

If you have an interactive whiteboard, you may find our Dominoes Environment useful for this problem.

### Key questions

Tell me about the differences between this one and that one. (Having chosen two that have the same outline.)
Are there any other ways you could put those dominoes together to make a rectangle?

### Possible extension

Allow the pupils to ask "I wonder what would happen if we ...?". For example they could place a domino on its edge.

### Possible support

Having access to dominoes, or as many congruent cuboids as possible, will help.