John Langrehr
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Tricky Thinking Problems: Advanced Activities in Applied Thinking Skills for Ages 6-11
Langrehr, John; Langrehr, Jan
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Learn to Think: Basic Exercises in the Core Thinking Skills for Ages 6-11
Langrehr, John
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Ask the Animals: Encouraging Early Childhood Curiosity
Langrehr, John
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Become a Better Thinker: Developing Critical and Creative Thinking
Langrehr, John
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