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d.innerHTML = d.innerHTML + '<a class=\"download_word download_word_lb\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(1)\"><em></em>下载文档(未登录)小学三年级数学《分数的简单计算》优秀教学设计描述：简单的分数加减法就是同分母分数加减法，这部分知识比较简单，在教学中让学生充分理解分数组成的基础上，学会计算同分母分数加减法，重点是理解算理，同时运用知识解决实际问题。下面就是小编给大家带来的小学三年级数学《分数的简单计算》优秀教学设计教案，</a>';
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