# Experiment-conjecture-prove - February 2008, Stage 1&2

## Problems

##### Age 5 to 7 Challenge Level:

Try continuing these patterns made from triangles. Can you create your own repeating pattern?

##### Age 5 to 7 Challenge Level:

Watch this "Notes on a Triangle" film. Can you recreate parts of the film using cut-out triangles?

##### Age 5 to 11 Challenge Level:

This practical problem challenges you to create shapes and patterns
with two different types of triangle. You could even try
overlapping them.

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

What do these two triangles have in common? How are they related?

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

In how many ways can you fit two of these yellow triangles
together? Can you predict the number of ways two blue triangles can
be fitted together?

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

This problem invites you to build 3D shapes using two different
triangles. Can you make the shapes from the pictures?

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