# Tagged: volume

## Volume of a sphere to calculate the capacity of your lungs

Just a quick idea here… To make a lesson on calculating the volume of a sphere contextually meaningful how about using a balloon to calculate the capacity of your lungs? Get a pupil to take a deep breath and then fully exhale into a balloon. Then measure the radius of the balloon and calculate the volume. You’ll need too get...

## Volume of a pyramid is a third of the corresponding prism…

I have seen lovely demonstrations using coloured water and perspex containers that the volume of a pyramid is one third the volume of a prism with the same base area and height. There are lots of videos on YouTube showing this; here’s one: However, here is an alternative activity for showing the same result from the excellent cutoutfoldup.com website: Nets...

## Cuboid volume challenge

If you have a 20cm by 20cm piece of paper and you have to use it to make a box, what would be the dimensions of the box with the maximum volume? This worksheet is a take on this traditional old classic lesson idea that combines some good mensuration, nets and calculation work with the spirit of investigation. To extend...