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and giving a voice to
* glossary of mathematical terms/symbols included
It comes with an excellent set of teacher's notes that will help the children to explore the world of basic geometry
simple touch sensor and spring clip
Sensory Reflective Sound Balls Penguin Books Ltd and giving a voice toRobustly constructed from stainless steel, these 7 reflective mirror balls are graduated in size from 50mm to 110mm, each with different contents so that every ball produces a different sound and movement effect. The hand finished shiny mirror surface provides a distorted fish eye lens reflection which is fascinating for children to observe. They are lightweight, smooth and tactile to handle and can be of particular appeal to children with SEND, for