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David M. Schwartz
David M. Schwartz spends much of his time finding unusual, whimsical ways to make math and science come alive for kids and teachers, both through his writing, and through speaking ...vizualizați mai multeDavid M. Schwartz spends much of his time finding unusual, whimsical ways to make math and science come alive for kids and teachers, both through his writing, and through speaking at schools and conferences. He's written over 50 books.vizualizați mai puține
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If You Made a Million How Much is a Million? Evaluare: 4 din 5 stele4/5