### Cubes

Investigate the number of faces you can see when you arrange three cubes in different ways.

### I'm Eight

Find a great variety of ways of asking questions which make 8.

### Let's Investigate Triangles

Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

# I Like ...

##### Stage: 1 Challenge Level:

Mr Gilderdale was using this interactivity with his class:

FULL SCREEN VERSION

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He had thought of a number rule and he asked the class to choose numbers to test.

If the number they chose fitted his rule, he put it under 'I like these numbers'. If the number they chose didn't fit his rule, he put it under 'I don't like these numbers'.

Here is a picture of the game after the class had chosen four numbers:

What could Mr Gilderdale's rule be?
If you were in Mr Gilderdale's class, which number would you choose next to test your idea?
How could you find out Mr Gilderdale's rule in the smallest number of guesses?