When I was in college, I spent some of my spare time working as a math tutor for people in the lower-level mathematics classes.
在大学时，我利用课余时间为数学较差的学生补习。
That mathematics history goes into primary school mathematics classes is a kind of necessity.
数学史走进小学数学课堂是一种必然。
We got to know each other in the advanced mathematics classes.
我们是在高等数学课上认识的。
Mathematics class culture is a cultural phenomenon existing in mathematics classes.
数学课堂文化是存在于数学课堂中的一种文化现象。
Mathematics class culture is a cultural phenomenon existing in mathematics classes.
数学课堂文化是存在于数学课堂中的一种文化现象。
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