Say something smart in the comments about why kids forget “little” things on problems. Or, alternatively, disagree with the premise of my first question. (How’s that for a lousy prompt?)

Thanks to Mark Kingsbury for the submission!

Categories

- Post author By mpershan
- Post date December 19, 2012
- 4 Comments on Circumference and Right Triangles

- Tags Circles

What made this question hard for the student? How come they got it wrong? Why did the student get it wrong in this particular way?

Today’s submission comes from Tina Cardone, who blogs at Drawing On Math.

Categories

- Post author By mpershan
- Post date July 23, 2012
- 2 Comments on Equation of Parabola

Categories

- Post author By mpershan
- Post date July 18, 2012
- 5 Comments on Problems with Proofs

The proof above isn’t great. In the comments, take on any of the following questions (or any others):

- Sometimes kids slap stuff together when they’re confused, and other times they’re substantively mistaken. Which is this, and what evidence supports your position?
- How would you help this student recognize that the logic in his proof doesn’t flow?
- What would your next steps be in working with this student? What sorts of problems would you ask him/her to solve?
- From the picture above, what evidence of knowledge
*do*we have?

- Tags G-CO.10

Categories

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