### Next Size Up

The challenge for you is to make a string of six (or more!) graded cubes.

### More Pebbles

Have a go at this 3D extension to the Pebbles problem.

# Cylinder Cutting

### Why do this problem?

This activity would be perfect to give to a very high-attaining pupil.  It offers a starting point that can lead to a hugh variety of avenues to pursue.

### Possible approach

Present the pupil with a kitchen roll (or similar) tube and introduce the activity as suggested.  If the learner is not accustomed to exploring mathematically, you might consider encouraging them to look at all the angles involved (both of the required shape and the pieces cut off the $A4$). If s/he still needs more prompting then you might consider suggesting they explore these angles further.

There are further suggestions in the hints.

### Key questions

Tell me what you have so far.
Which direction do you want to go in now?