Age 7 to 11
What makes one cuboid bigger than another? You may like to talk to
someone else about this!
Might it help to draw nets?
As you know the length and width of the paper, can you say anything
about the length, height and width of the cuboid looking at the net
Perhaps using a spreadsheet would help?
Or how about making some "skeleton" cubes out of construction
equipment or cubes?