From an experiment in trying to make a number line that looped back on to the screen came Number Cylinder. An interactive whiteboard resource that could prove a useful alternative to using a traditional number line as it provides some of the features of a 100 square too.
Click and drag on the screen to rotate and change position. Double click the screen to to increase the horizontal distance between the numbers. Dragging in the centre of the screen produces smaller movements in the Number Cylinder, this is marked by the concentric circles.
This resource is predated by a physical version: The Numdrum. To find out more about this resource visit the Numdrum site.
Go to learning resource. (Positive numbers only)
Go to learning resource. (Negative numbers as well)
If you prefer traditional number lines try these number lines.
As an additional resource for teaching negative numbers. Use temperature comparison resource.