Practise your addition facts making totals up to 10.
The whale is trapped in the lake.
Add lengths of pipe until the total is 10, (you can use more than two).
Then turn the wheel valve to set the water pouring.
If you’re answer is correct the whale will swim off to sea.
Use the up and down arrows to make totals less than 10.
NB: The numbers are random, so if you want to skip a number press on the spanner.