Author Archives: Elizabeth DeCarli

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About Elizabeth DeCarli

I worked as a high school math teacher for nine years at James Logan High School, a huge (over 4000 students!) public high school in the San Francisco Bay Area. I was fortunate to start teaching during an exciting time in math education––I had the opportunity to collaborate with colleagues on implementing an NSF-funded curriculum, and I worked as a technology coach, helping math teachers integrate Sketchpad and other engaging programs into their teaching. Before teaching, I worked at one of the early educational software companies, Computer Curriculum Corporation. I've been at Key for six years, first as an Editor, and now as the Mathematics Product Manager.

Pass the Candy! Sweetening the Study of Probability

As part of our guest blog series, we bring you another post from Kathryn Shafer. A former middle school and high school math teacher, Kathy is now an Assistant Professor in the Department of Mathematical Sciences at Ball State University, … Continue reading

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How Low Can You Go?

I heard a great radio interview on NPR this week with Tim Storms, who holds the Guinness Book of Records for the lowest note sung by a human. He sang a few low notes for the interview—so low that my … Continue reading

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The Geometer’s Sketchpad and Sketch Exchange: What’s New?

Hey Sketchpad users—there’s a new version of Sketchpad available! It’s Sketchpad version 5.05, a free upgrade for Sketchpad 5 users. For you early adopters, Sketchpad 5.05 is fully compatible with Mountain Lion and will also be compatible with Windows 8 … Continue reading

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Exploring the Law of Large Numbers with TinkerPlots

As part of our guest blog series, we bring you a post from Kathryn Shafer. A former middle school and high school math teacher, Kathy is now an Assistant Professor in the Department of Mathematical Sciences at Ball State University, … Continue reading

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Lessons from the News

There’s nothing like reading the local paper over breakfast to start your day off with a grimace. Take this headline from Wednesday’s San Francisco Chronicle: “State’s college tuition rising fastest in nation.” Just what California parents need, more stress! The … Continue reading

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A Bittersweet Milestone

I’m about to reach a milestone, and I have mixed feelings about it. I started teaching in 1994, and I taught for nine memorable years. In 2003, I realized that I need time away from the classroom, and I took … Continue reading

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Turning Problems into Professional Development

I had the pleasure of meeting Jamila Riser a few years ago at NCSM and seeing her presentation about P-Cubed: Powerful Pedagogical Practices. P-Cubed was a program implemented jointly by the Delaware Mathematics Coalition and the University of Delaware (and … Continue reading

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Music and Math in the News

I have a memory from elementary school of a lesson on music and math that was taught by guest instructors. The instructors had us clap out poly-rhythms, with half the class clapping in two’s while the other half clapped in … Continue reading

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March Mathiness

http://youtu.be/WFvYZDR4OeY

Check out the graph below, which shows the heights of 29 people. What do you notice about the graph? What do you wonder? (Thanks, Annie Fetter!) Now, what if I told you that this group of 29 people were all … Continue reading

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Face(book) the Facts––You’re Being Targeted!

I have a fake Facebook birthday. I chose leap day for my fake Facebook birthday, so this is the first year I’ve actually celebrated it. My Facebook friends are a mix of long-time friends, close and distant relatives, acquaintances from … Continue reading

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