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Category: Algebra and Trig for Students and Parents

10 Ways to Check For Reasonableness

The next-to-last step of any problem solving should be checking your answer for reasonableness. (The last step, of course, is stating the answer clearly and completely.) Often when we're working...

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link to Las Limitaciones de los Mosaicos Algebraicos

Las Limitaciones de los Mosaicos Algebraicos

(Click here to read this post in English.) Los mosaicos algebraicos puede ser extremadamente útil para desarrollar el pensamiento algebraico temprano y modelar ciertos tipos de problemas. Sin...

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link to How to Encourage Your Child to Show Their Thinking

How to Encourage Your Child to Show Their Thinking

"Show your work." Have you ever tried to ask a group of math teachers what this actually looks like? Answers can vary, but in general, even the teachers who say this often have a hard time describing...

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link to Why to Encourage Your Child to Show Their Thinking

Why to Encourage Your Child to Show Their Thinking

"Show your work." A common theme on math worksheets and tests. Yet, despite the frequent refrain, it's actually quite difficult for teachers to describe what good examples of "showing work" actually...

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link to 7 Reasons why $(x+4)^2$ does not equal $x^2+16$

7 Reasons why $(x+4)^2$ does not equal $x^2+16$

It's tempting to think that squaring a binomial means simply squaring each term. I mean, if math is logical and makes sense, it should be that easy, right? Yet, algebra students (and even students...

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link to What is Not a Function in Algebra?

What is Not a Function in Algebra?

Functions are a big deal in algebra. The ideas they generate continue to influence how we think about mathematics beyond algebra as well. Conceptually, they are one of the most frequently...

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About Me

Barbie has taught math and worked in student support at community colleges and other postsecondary schools for twenty years. Most of her students were math-insecure. Barbie is also a parent and regular school volunteer, using her math teaching skills alongside local teachers to support and bolster the students and families as much as she can.

Some posts contain affiliate links. If you purchase through these links, I may earn a small commission at no additional cost to you. You can read more about how I choose affiliates and products at my affiliate page.

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