Slot weight is useful to investigate effect of weight as a force. It canbe use with the spring scale or simply as a normal mass. The hook-base + 9 slot weight make a whole set. For example, 1000g set consist of the hook-base which is 100g and 9 pieces of 100g slot weight. The set is contained in a plastic container.
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Tags: Mass & Weights, Mathematics, Manipulatives, Hands-On, Mass & Weights, Pre-school, early childhood, Mathematics