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It’s not a waste of time to theorize
deeply about student mistakes.
In fact, I think it will enrich your
teaching, and you should give it a shot.
Michael Pershan
mathmistakes.org
Why do students tend to
do this?
What makes this mistake
tempting?
What other
mistakes are similar
to this one?
How can you help this
student?
How would you react?
Why is this student
making this mistake?
What does this
student know?
Why do kids tend to
make this mistake?
What other mistakes
are like this one?
What makes this
mistake tempting?
It’s not a waste of time to theorize
deeply about student mistakes.
In fact, I think it will enrich your
teaching, and you should give it a shot.
Michael Pershan
mathmistakes.org
"Most kids just try to cram in the fact that
negative exponents do ummm, something
to the base. Without some conceptual
hangar to place this fact they are
left wildly guessing. “
"But really, as much as I try not to write
these off to “autopilot”, I can’t think of
any other explanation.“
"I think that this idea is attractive because
many students think that raising a number
to a power is the same as multiplying the
base by the power as in “4^2 = 8.″
It’s not a waste of time to theorize
deeply about student mistakes.
In fact, I think it will enrich your
teaching, and you should give it a shot.
Try a hard problem on your own, then
reflect on how you mess up. Or do a
confidence poll with your students. And
write a post if you notice something
cool.

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Why it's not a waste of time to theorize deeply about student mistakes.

  • 1. It’s not a waste of time to theorize deeply about student mistakes. In fact, I think it will enrich your teaching, and you should give it a shot. Michael Pershan mathmistakes.org
  • 2.
  • 3.
  • 4.
  • 5. Why do students tend to do this?
  • 6. What makes this mistake tempting?
  • 7. What other mistakes are similar to this one?
  • 8. How can you help this student? How would you react? Why is this student making this mistake? What does this student know? Why do kids tend to make this mistake? What other mistakes are like this one? What makes this mistake tempting?
  • 9. It’s not a waste of time to theorize deeply about student mistakes. In fact, I think it will enrich your teaching, and you should give it a shot. Michael Pershan mathmistakes.org
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15.
  • 16. "Most kids just try to cram in the fact that negative exponents do ummm, something to the base. Without some conceptual hangar to place this fact they are left wildly guessing. “ "But really, as much as I try not to write these off to “autopilot”, I can’t think of any other explanation.“ "I think that this idea is attractive because many students think that raising a number to a power is the same as multiplying the base by the power as in “4^2 = 8.″
  • 17.
  • 18.
  • 19.
  • 20.
  • 21.
  • 22.
  • 23.
  • 24.
  • 25.
  • 26.
  • 27.
  • 28.
  • 29.
  • 30. It’s not a waste of time to theorize deeply about student mistakes. In fact, I think it will enrich your teaching, and you should give it a shot. Try a hard problem on your own, then reflect on how you mess up. Or do a confidence poll with your students. And write a post if you notice something cool.