### Clock Hands

This investigation explores using different shapes as the hands of the clock. What things occur as the the hands move.

### Transformation Tease

What are the coordinates of this shape after it has been transformed in the ways described? Compare these with the original coordinates. What do you notice about the numbers?

### Penta Play

A shape and space game for 2,3 or 4 players. Be the last person to be able to place a pentomino piece on the playing board. Play with card, or on the computer.

# Turning Granny

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

Watch this short video clip:
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Make a granny knot and a reef knot for yourself.

Now investigate their symmetries. Start with the granny knot.
Does it look the same after a half turn about a vertical axis?
How about after a half turn about a horizontal axis from right to left?
Now try a half turn about a horizontal axis front to back. Does it look the same this time?
(Don't forget you can play the video again to remind you of these three axes.)

Try the same thing with a reef knot.

What is the same about the symmetries of the two knots?

What is different?