In addition, many activities were held in the camp such as, the Second Annual National Debate for Middle School Students and the Third National English Speech Competition for Middle School Students.

另外，夏令营也举办了许多活动，例如第二后全国中学生辩论会和第三后中学生英语讲演比赛。

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In the third part, pondering for the teaching's theory about black box in senior teaching physics, I propose educational value of black-box in the middle school physics teaching.

第三部分为黑箱在中学物理教学中应用的理论思考，通过对黑箱特点的分析，阐述黑箱在中学物理教学中的教育价值和应用的原则。

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Focused on teaching units and teaching periods, the third part introduces in detail the ways and methods of instructional design of physics in the new curriculum of junior middle school.

第三部分是在单元和课时水平上，较为详细地介绍初中物理新课程教学设计的方法。

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Now in its third year, the National STEM Video Game Challenge is a competition among middle school and high school kids who design their own video games.

FORBES: Sesame Workshop Wants Your Kid to Design Video Games

Today, YES serves students from the third grade through graduate school, though Eisner focuses on the pivotal upper-middle-school years: The kids are old enough for him to reliably evaluate their work ethic and their hunger for knowledge, but young enough that their minds are still growing rapidly.

WSJ: The Unlikely Reformer | Innovator of the Year 2012 Education