Category: Expressions

Order of Operations

How would you help this student?

Thanks to Chris Robinson for the submission.

Combining Like Terms + Exponents

Post author By mpershan
Post date January 20, 2013

Here are 7 mistakes. There represent all of the variety of mistakes from a selection of 36 students. The first two mistakes were repeated by several students, but the last 5 were unique in the sample.

Which of these mistakes would you predict? Which ones surprise you? Can you make sense of them all?

Expressions Seeing Structure in Expressions

Number Tricks and Expressions

Post author By mpershan
Post date January 11, 2013
3 Comments on Number Tricks and Expressions

Comment on anything, but note the parentheses.

Expressions High School: Functions

Evaluating Expressions

What’s interesting about these mistakes?

Algebra 1 Multiplying Polynomials Seeing Structure in Expressions

Multiplying Monomials and Binomials

Post author By mpershan
Post date November 14, 2012
3 Comments on Multiplying Monomials and Binomials

Why would $2m \times m^{2} = 3m^{2}$ ? Or $2m^{2}$ ?

This mistake was brought to you by the letters M, A, R, Y, B, O, U, R, A, S, S, and A. You can follow her on twitter and on her blog.

Expressions Seeing Structure in Expressions

Words –> Expressions

How would you help this student become sensitive to this language?

Another quality submission from John Weisenfeld.