An introduction to the properties of cylinders and cones. Cylinders can be found everywhere - for example, a tin of tomatoes is a cylinder. A cylinder has two flat faces and one curved face and it can come in many different sizes. A rolling pin, spaghetti and a swiss roll are all cylinders. These cylinders have no space inside so they are solid cylinders.

If a cylinder is empty inside like a tin of tomatoes it is called a hollow cylinder. We can find examples of hollow and solid cylinders all around us, such as wheels and drum kits. A hollow cylinder can be changed into a hollow cone shape. A hollow cone has one curved face and a sharp point. Cones are good for ice creams, party hats and juggling sticks.

First broadcast:
10 September 2007

Children could investigate how many different cylinders and cones are around school by going on a shape hunt. Children could have a go at making a cone or cylinder out of playdough or clay. Show the children a range of solid and hollow shapes and ask them to decide which are solid and which are hollow.