Our topic in Year Four is Water World.
We started by estimating how much of the Earth's water is potable (drinkable) and non-potable (undrinkable). Here's what we thought.

0
Here's the actual answer:

We were suprised that only 0.097% of the Earth's water is drinkable!
We are learning how we can help to protect this precious resource and how fortunate we are to have fresh water on tap.