energy 发表于 2025-3-21 17:49:51

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Vital-Signs 发表于 2025-3-21 20:33:49

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grounded 发表于 2025-3-22 01:26:43

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压迫 发表于 2025-3-22 06:50:49

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发牢骚 发表于 2025-3-22 09:57:00

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DIKE 发表于 2025-3-22 14:19:16

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gusher 发表于 2025-3-22 20:01:41

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纠缠 发表于 2025-3-22 22:26:25

A Mathematical Perspective of Ratio and Proportion

Lasting 发表于 2025-3-23 02:00:57

Proportional Reasoning—A Psychological-Didactical View

interrogate 发表于 2025-3-23 08:52:36

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查看完整版本: Titlebook: Ratio and Proportion; David Ben-Chaim,Yaffa Keret,Bat-Sheva Ilany Book 2012 SensePublishers 2012 teacher education.mathematics education