Being curious

Imagine we have four bags containing numbers from a sequence. What numbers can we make now?

Take three consecutive numbers and add them together. What do you notice?

Try out this number trick. What happens with different starting numbers? What do you notice?

The Number Jumbler can always work out your chosen symbol. Can you work out how?

In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?

Start with a triangle. Can you cut it up to make a rectangle?

Can you find the values at the vertices when you know the values on the edges of these multiplication arithmagons?

Where should you start, if you want to finish back where you started?

Play around with sets of five numbers and see what you can discover about different types of average...

Can you do a little mathematical detective work to figure out which number has been wiped out?