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π Decision making
is a powerful aid in the understanding of number
Check the sample pages for an idea of what's in the book
there is something for everyone
Adopting the sleek flowing lines of the old Formula One prototypes
ZipString - Chameleon String Pack Counters and Dice π Decision makingZipString Chameleon Colour Strings Add a visual twist to your ZipString tricks with Chameleon Strings. Designed with segmented colours (red blue, red yellow, or blue yellow), they blend into a single new colour in motioncreating a smooth, colour shifting effect that grabs attention. *Includes 3 colour changing strings (assorted colour combos) *Creates optical colour mixing illusion while in use *Easy to attach compatible with all ZipString models