Category Archives: Uncategorized
print version of ACS2E is now available for purchase
Thanks to our friends at 619 Wreath Publishing, there’s now a bound print version of Active Calculus Single Variable 2nd Edition available for purchase, in both paperback ($38) and hardcover ($48). Bound versions of the ACS2E activities workbooks are forthcoming … Continue reading
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Image descriptions (alt-text) to comply with WCAG 2.1
The deadline to meet the Web Content Accessibility Guidelines (WCAG) 2.1 Level AA standard is late April 2026. Thanks to PreTeXt (the authoring platform in which our books are written), the text in Active Prelude, Active Calculus, and Active Multi … Continue reading
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Updated ancillary resources for Fall 2025
See the note at https://activecalculus.org/instructors/ that takes you to the instructors’ Google group for more information and links to various resources.
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Active Calculus Single – 2nd edition is available
I’m delighted to share that the 2nd edition of AC-Single has now been officially released in HTML and PDF: you can learn more at the landing page for this edition of the text at activecalculus.org/acs2e/, with the HTML version at … Continue reading
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Updates on Active Calculus Multivariable
We are excited to bring you some news about Active Calculus – Multivariable. First, Nick Long and I have taken over primary responsibility for this text, as Steve Schlicker is beginning retirement. We are grateful for the foundation that Steve … Continue reading
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Welcome to the updated activecalculus.org
Welcome to the redesigned activecalculus.org, including this new location for the blog that was formerly hosted at https://opencalculus.wordpress.com/.
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PreTeXt, Runestone, and the exciting future of open textbooks
In late June, I was fortunate to attend a week-long UTMOST workshop in Ann Arbor that brought together education researchers, PreTeXt developers, Runestone developers, and textbook authors. The newest part to me was learning more about Runestone. Runestone Academy was … Continue reading
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Tagged open source, technology, textbooks
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Active Calculus is Turning 10
“The days are long but the decades are short.” That’s one of my favorite quotes about the nature of time and life, written in 2015 by a then-30-year-old! Ten years ago in early August 2012, I wrote this post that … Continue reading
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Screencasts for Active Prelude to Calculus
My GVSU colleague Mandy Calvillo has developed a fantastic resource for students and instructors using Active Prelude: a YouTube library of 122 (!) short videos that offer additional perspective and explanation on key ideas in the text. The videos are … Continue reading
A new free mathematics journal
Interesting read here: http://www.forbes.com/sites/kevinknudson/2016/04/30/the-future-of-mathematics-publishing-an-interview-with-sir-timothy-gowers/#5d41b5a52467 I’m mainly posting this so I have a record of it, but there’s lots of similarity between what Gowers says about his journal and what we say about free textbooks.
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