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It's The Thought That Counts: A Sourcebook of Mathematics Activities Related to Conservation Abilities
It's The Thought That Counts A Sourcebook of Mathematics Activities Related to Conservation Abilities Author:Lawrence Lowery, Neal Lowery, Susan Cronin-Paris (Illustrator), Margaret Sanfilippo (Illustrator), Bill Eral (Illustrator) Activities correlated to Piaget's stages of mental development. More than 250 practical "starter" ideas for concrete, pictorial, and abstract experiences in conservation of number, length, solid and liquid amounts, area, weight, volume, and displaced volume. Reproducible worksheets and ideas for additional activities.