Numberlines can provide support and be a model for early work with all four operations. They can be used to aid understanding of sequences of whole numbers, decimals and fractions and as a precursor to rounding. Identifying or placing numbers on numberlines with just the ends numbered encourages thinking about the value of each interval, a skill necessary when reading scales for measuring or in graphs.

Number tracks are similar to numberlines, but contain the number within the interval (which is usually a square). If you buy the Numicon number track, it is compatible with centimetre cubes, such as Dienes (base 10 blocks) and Cuisenaire.

Numberlines and number tracks are available to buy online. I got my 1-100 numberline from Amazon and my Numicon number track from The Dyslexia Shop .

Online interactive numberlines