20 two-tone stones made from a unique stone mix that is durable both inside the classroom and outside. Particularly well-suited for use with 10-frame trays, these pebbles are a great teaching aid to encourage counting, pattern -making, making number bonds and sorting activities. The stones measure 45mm in diameter and 10mm at the thickest point.

Reasons to Love:

• Perfect for both inside and out, allow for exploration of numbers up to 20 – a key objective of the year 1 Maths Curriculum.

• The differing colours help children to understand and recognise differences between numbers. For example use them to identify and recognise differences between odd and even numbers.

• Use as a way of demonstrating pattern making with children, e.g. counting in 2’s, 5’s, 10’s using the differing colours.

• Perfect for use alongside the frame tray sets, with easy manipulation allowing for representation of number/teaching of number bonds within 20.

• Use as means of matching numerical values to quantities, incorporating basic addition and subtraction.