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7
votes
1answer
225 views

Would it be a good idea to provide students with Khan Academy links?

I teach a Grade 11 Functions class, but this relates to basically all grade levels. Khan Academy (discussed in Is Khan academy really good?) is a resource often being used by students as extra help,...
7
votes
2answers
152 views

How much prior math should I review in teaching a graduate-level course?

I am scheduled to teach a graduate-level course in engineering whose basis is in the solution of ODE’s and PDE’s, and thus is about halfway between a math course and an engineering course. We ...
29
votes
6answers
731 views

When $-x$ is positive

This recent question reminded me of a question: this year several students expressed concern about the expression $\sqrt{-x}$, on the grounds that it must be undefined because $-x$ is a negative ...
11
votes
4answers
398 views

Effective Final Review

I'm currently teaching a small section of calculus (~35 students). As the semester comes to a close, I'm looking for an effective way to use one or two classes to help my students review for the final ...
5
votes
2answers
183 views

How do I get my middle schoolers warmed back up at the start of the year prior to giving a placement test

I'm going to be teaching small (< 10 students) but very mixed group of middle schoolers (US system, ages 11-13) who have had varying amounts of pre-algebra and algebra instruction thus far. I need ...