Compare to this post.

Are there any other mistakes that you would expect students to make on this problem?

Thanks to Kristen Fouss for the submission.

Categories

- Post author By mpershan
- Post date January 30, 2013
- 4 Comments on Same Question, Different Mistake

Compare to this post.

Are there any other mistakes that you would expect students to make on this problem?

Thanks to Kristen Fouss for the submission.

Categories

- Post author By mpershan
- Post date January 30, 2013
- 2 Comments on Canceling and Trig Identities

How do you teach this topic so that students don’t make this mistake? (Or do you just rail on their earlier teachers?)

Thanks to Kristen Fouss for the submission.

Categories

- Post author By mpershan
- Post date January 25, 2013
- 8 Comments on Trig Identities

In the comments: can you reconstruct each step of the student’s argument? What was he thinking?

Thanks to Kristen Fouss for the submission.

[We have a growing library of trig identities, and I’ve got like 10 more trig identities to post over the next few weeks. Seems to be a tough spot for students.]

Categories

- Post author By mpershan
- Post date January 8, 2013
- 5 Comments on Trig Identities

- Post author By mpershan
- Post date December 12, 2012
- 5 Comments on Combining Like Powers

What’s up with the above? Say something smart in the comments about the implications of a mistake like this one. What’s another mistake that you would expect this student to make in the future? What’s a mistake that you wouldn’t expect the student to make?

Thanks to Jonathan Newman for the submission.

Categories

- Post author By mpershan
- Post date June 30, 2012
- 4 Comments on Trigonometry – Find the missing angle