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If you had 36 cubes, what different cuboids could you make?

### Cereal Packets

How can you put five cereal packets together to make different shapes if you must put them face-to-face?

### Little Boxes

How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?

# More Christmas Boxes

### Why do this problem?

This well known challenge is one which gives pupils opportunities to further their understanding of volume and the factors which affect size. It covers that part of understanding where common sense may not be sufficient.

### Possible approach

It would be good, after introducing the challenge, to allow those who wanted to cut out squared paper to help with the exploration.

### Key questions

How did you find the number of cubes?
Is there any way in which you could change this challenge?

### Possible extension

When exploring the volume - as distinct from the number of cubes - what about cutting a square $1.5$ by $1.5$ from each corner?
Suppose the $10$ by $10$ sheet had two smaller sheets cut from it? What would the total volume of the two boxes be?

### Possible support

Some pupils will need assistance to cut off the squares accurately.