Author Archives: Matt Boelkins

A few updates to the HTML version of Active Calculus

I’ve made the following corrections to fix some typos and other errors: The statement of the quotient rule in Section 2.5 mistakenly stipulated that the derivative of the denominator be nonzero, when of course it’s the denominator function itself must be nonzero. In Exercise #6 in Section 3.4, the cost of the top was accidentally […]

Check out

My friend and graduate school colleague Tom Pfaff of Ithaca College has done a lot of great work on issues related to sustainability.  He has a wonderful collection of free resources for instructors at his blog, In particular, you can find sources of real world data for your classes – especially stats, calc, or any […]

A new home for Active Calculus:

I’m pleased to announce that the HTML version of Active Calculus will now be found at At you’ll find a landing page that includes an overview of features of the text, links to the various versions of the text, and notes about some ancillaries that are available upon request.  The PDF version remains at […]

More Linear Algebra

Many years ago, Gil Strang wrote a wonderful short essay titled “Too Much Calculus.”  His thesis:  calculus and linear algebra are imbalanced in the curriculum.  Even as the author of a calculus text, I totally agree.  Our students need more linear algebra, more in terms of time, exposure, and understanding. My phenomenally talented friend and […]

Metacognition in a calculus prep course

As usual, fall semester flew by. On Monday, August 28, I met with my two classes for the first time, and on that day we did an activity that I recounted in a Facebook post, where I wrote: “I followed Stan Yoshinobu‘s wonderful first day lead and asked my students as they met one another […]

“Priced at nearly $100 less than the competition”

(I’m overdue to post something meaningful in this space, but today’s email made this post irresistible).  Following is clipped from my email, and here’s a direct link to the text:  The tag line is “Priced at nearly $100 less than the competition, …” and when you click through to their web page, you see […]

Active Calculus 2017 – print copy now via Amazon

In an earlier post, I noted that the 2017 version of Active Calculus – Single Variable was available for purchase via CreateSpace.  There were some minor technical issues with getting the text available on Amazon, but those have now been reconciled, and you can find it directly at this link.  It’s even available for Amazon […]