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一刀将七块巧克力均分给五个学生！小学生能掌握等差数列的雏形
为什么培养动手能力很重要，因为有些不懂的问题，动动手就能更前进一步，动手能力同样是学习数学不可或缺的能力！视频中有些错误：那条平行线没有刚好切到五块巧克力的首尾段端点，还是需要直尺来量的
数学兴趣培养，适合小学生/初中生/高学生25/152
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