这被校订的版在教室里基于示教经验，并且把很多练习编入改变度复杂性。
This revised edition is based on teaching experience in the classroom, and incorporates many exercises in varying degrees of sophistication.
美国版小学数学第1 A - 6b型是第一和家庭使用的理想选择两个教室-第七的成绩。
Primary Mathematics us Edition 1a-6b is ideal for both classroom and home use for 1st - 7th grades.
从他开始写书时起，他就一直在通过电子教室教授基于他的简单原理的课程，举办远程研讨会，签订出书协议，直到现在开始销售电子版。
Since writing that book he has gone on to teach e-classes based on his simple method, give teleseminars, land a publishing contract for the book, and now sell it as ane-book, too.
从他开始写书时起，他就一直在通过电子教室教授基于他的简单原理的课程，举办远程研讨会，签订出书协议，直到现在开始销售电子版。
Since writing that book he has gone on to teach e-classes based on his simple method, give teleseminars, land a publishing contract for the book, and now sell it as ane-book, too.
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