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yyGrams Books: Books, Games, Puzzles

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| David Zethmayr | |
| Zethmayr presents boundary mathematics to young children, introducing the ideas of logic, proof, and algebra far earlier than is usually attempted. Books, games, and puzzles on this site reinforce these ideas, and Zethmayr presents a seminar and children's play in person. | |
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| Levels: | Elementary |
| Languages: | English |
| Resource Types: | Games, Books |
| Math Topics: | Logic/Foundations |
| Math Ed Topics: | Specific Math Concepts/Techniques |
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