Which piece of equipment would you use to measure how hot the water is?

How can Lara find out the volume of the water in her bottle?

Jo wants to find the mass of a stone. Which unit should she use to record it?
The table is not finished. Which number shows where the heading 'Day' should be written?

A pond survey finds 4 frogs, 6 fish and 2 newts. Which bar chart shows the correct numbers?