### The Numbers Give the Design

Make new patterns from simple turning instructions. You can have a go using pencil and paper or with a floor robot.

### Straight to Curves

How can you make a curve from straight strips of paper?

### Colouring Curves Game

In this game, try not to colour two adjacent regions the same colour. Can you work out a strategy?

# Celtic Knot

##### Age 7 to 11 Challenge Level:

A Celtic knot pattern $4\times4$ looks like this. You can see how it is built up on a grid.

A Celtic knot pattern $8\times8$ looks like this on a grid.

A Celtic knot pattern $6\times6$ looks like this.

Can you build it up? There is a copy of the design to downloadÂ here.

You can do it by making a set of cards to use on a $6\times6$ grid in a $24$ cm square with four copies ofÂ this sheet. There is also a second page with two copies of the design.

Or you could try doing it using this interactivity.
Full screen version
If you can see this message Flash may not be working in your browser
Please see http://nrich.maths.org/techhelp/#flash to enable it.