These plastic hexagon-shaped masses help children visualize mass and reinforce how addition works. Each color is a different height and mass, which is stamped on the top. Smaller masses stack to equal both the mass and height of larger masses. The set includes twenty 1 g, twenty 5 g, ten 10 g, and four 20 g masses, or 300 g total. Comes in a sturdy plastic case. Ideal for use with the Primary or School balances.
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WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years.
11640
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Physics & Engineering/Measurement Equipment/Masses and Weights
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