What feedback would you write on this kid’s paper? Why?

(Thanks, KN!)

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- Post author By mpershan
- Post date March 26, 2014
- 8 Comments on “y=x/(x+1) has got to be a line.”

We’ve been studying graphs of rational functions in Precalculus.

Me: “Take 1 minute with your group: what will the graph of y = x/(x+1) look like?”

One group, during discussion, asserted that it had to be a line, using a sort of process of elimination: it’s not a parabola, it’s not cubic, it’s not a hyperbola.

Interesting, right? Why does this seem like a linear equation? I guess that it sort of looks like one…

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- Post author By mpershan
- Post date March 23, 2014
- 4 Comments on Finding Inverse Functions

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- Post author By mpershan
- Post date February 3, 2013
- 4 Comments on One inverse functions problem, many mistakes

You grade these tests on Sunday, and you see these kids on Monday. What does the lesson plan look like?

For more context and analysis, go check out the blog from whence these came.

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- Post author By mpershan
- Post date December 6, 2012
- 1 Comment on Composition of Functions

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- Post author By mpershan
- Post date November 29, 2012
- 5 Comments on Solving logarithmic equations

Selected by: Christopher Danielson

Question: What’s up with this? Why does this piece of student work matter? Does it?

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- Post author By mpershan
- Post date October 30, 2012
- 5 Comments on Inverse Functions

What does the student know, and what does he misunderstand? How would you help?

Today’s submission comes via Christopher Danielson, who blogs at Overthinking my teaching.

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- Post author By mpershan
- Post date October 18, 2012
- 6 Comments on Following a recursively defined rule

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- Post author By mpershan
- Post date October 17, 2012
- 2 Comments on Matching a recursive function to a table