The Numbers' Line Microworld is for representing numbers on an oriented line, choosing its scale.
In the Numbers' Line Microworld it is possible: to compose a number, to insert the composed number in the oriented half line by selecting the corresponding label, to move the half line backwards and forwards to search for the position of a number, to reduce or to increase the unit on the half line (by reducing its scale), to insert bigger numbers, to visualize in words the value of the number produced.

The numbers' line, with the numbers represented, can be copied to be pasted on the Solution Sheet.