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and volume
They are graded by a variety of distinctive sounds
materials needed for the classroom
These handmade wooden letters of various colours and fonts are arranged in partitioned storage boxes
Broad Stair Small Moveable Alphabet and volumeThese are ten hardwood prisms painted in brown lacquer. Maintaining a constant length the prisms increase in width by 1cm increments. These prisms develop visual and muscular perception of dimension. Working with these materials prepares the child to understand mathematical concepts in plane geometry, area and volume. (1 x 1 x 20cm to 10 x 10 x 20cm). Includes spare 1 cm prism
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