This large, laminated number line is double-sided, showing the numbers 1-10 on one side and 0-30 on the reverse. It measures 30cm x 100cm and is supplied with a whiteboard marker to use on the write-on, wipe-off surface. The number line can be used to develop many number skills eg. counting, positional terms, estimation, addition and subtraction calculations. Also available in a smaller, desk-sized version for individual use.