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squares and pentagons
Seconds and Roman Numerals
each with its own colour
producing a current which can be registered on a very sensitive instrument such as a Picoammeter or an Electrometer
of Turns: 60 + 60
Polydron Class Set Tax on Sales 0% squares and pentagonsRange: Original Polydron Age: 4 years + Contents: 100 Equilateral Triangles, 20 Hexagons, 40 Squares, 24 Pentagons and Exploring Polydron activity booklet Weight (kg): 3. 52 L x W x H (cm): 43 x 31 x 7 This excellent pack contains enough Polydron for a whole class of children. It comes with an excellent set of teacher's notes that will help the children to explore the world of basic geometry, shape and space. Contains 184 pieces including 40 squares,
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