To Accumulate a Rate — Integrate!

A Mathematical WordPress.com site

Reasoning with Tabular Data in your Dreams

    Last night I was falling asleep and I had a great assignment idea. I got up grabbed a piece of paper and wrote the following down. This morning … Continue reading

November 2, 2012 · Leave a Comment

Basic Algebra in Calculus

I had a student in Calculus today ask why I said, “that’s a fair question, let’s check it out.” As I wrote the following stuff on the board I was … Continue reading

November 1, 2012 · 3 Comments

6 Equations, 6 Unknowns, Guess and Check?

We did this problem in my Advanced Algebra class today. Yesterday we took the test on systems of equations including up to 3 equations with 3 unknowns. Today I put … Continue reading

October 19, 2012 · Leave a Comment

Systems of 3 equations with 3 unknowns

Today I taught solving systems of 3 equations with 3 unknowns. I’ve taught this lesson numerous times over the past ten years teaching Advanced Algebra with many years like last … Continue reading

October 12, 2012 · 2 Comments

Foldable Parents

Some people would like to be able to fold up their parents and bring the with them wherever they go. Other’s would like to fold them up, put them in … Continue reading

October 4, 2012 · Leave a Comment

A Little Taste of Interactive Notebooks

My students are getting a little taste of Interactive notebooks. I really have been loving the interactive notebook ideas. Last night I read a post at Math = Love about … Continue reading

September 30, 2012 · Leave a Comment

Quadratic slopes without a derivative

Note in the graph above that the slope of the tangent line at x = 1 is the same as the slope of the line that goes through the points … Continue reading

September 29, 2012 · Leave a Comment

Creativity in Mathematics – Converting kms to miles

I look at my speedometer to figure this one out. There must be 160km in 100 miles. What else can we find the answer to if we think creatively? I … Continue reading

September 23, 2012 · Leave a Comment

Algebra Errors in Calculus

I just took this picture on my patio and thought…”wouldn’t it be fun to have students bring chalk one day and do may in the parking lot?” Three error’s from … Continue reading

September 23, 2012 · 1 Comment

When Dan Meyers links to your blog…

Here’s what happens… That is quite an impressive following considering only some of them may have been interested enough to follow the link. I wasn’t really writing this blog for … Continue reading

September 22, 2012 · 3 Comments
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