Shout out different numbers and have your child jump up or crouch down if the number is higher or lower than the one before it. See how fast you can both go! For older kids use big numbers or fractions to make it harder.

Hopefully none needed!

Ask your child to start with the number 2 and keep doubling it. After just 9 doublings it will exceed 1,000! Explain how something small grows increasingly quickly (exponentially) when increasing by any percentage year on year.

1) If you double 2 you get 4. How many more doublings would you need to get to a number bigger than 1,000?

2) Can you draw a line with your finger which shows what "exponential growth" looks like?

3) If you put £2 in the bank knowing it will double every year - how rich will you be in 10 years time?

Introduce your child to the first rule of investing - avoid losing money since you'll have to work twice as hard to end up back where you started again! You can demonstrate this point by asking your child to calculate a few simple percentages.

1. If you invest £1,000 which loses 50%, what do you have? (Answer = £500)
2. Then if you invest £500, which gains by 50%, what do you have? (Answer = £750)
3. If you lose 50% of an investment, what percentage do you need to then gain by to end up where you started? (Answer = 100%)