Tim Chartier, an Associate Professor of Mathematics at Davidson College, has a series of ingenious and delicious methods for illustrating fundamental concepts from calculus using chocolates. I had a brilliant calculus teacher, Alvin Anson, but I think a little chocolate would have improved even his techniques:
Where’s the chocolate? Rather than shading a square, we will place a milk chocolate chip on a square we would have colored red and a white chocolate chip on a region that would have been white. To begin, the six by six grid on the left becomes the chocolate chip mosaic we see on the right, which uses 14 white chocolate of the total 36 chips. So, our estimate of π is 2.4444. We are off by about 0.697.
Next, we move to an 11 by 11 grid of chocolate chips. If you count carefully, we use 83 milk chocolate chips of the 121 total. This gives us an estimate of 2.7438 for π, which correlates to an error of about 0.378.
Finally, with the help of public school teachers in my seminar Math through Popular Culture for the Charlotte Teachers Institute, we placed chocolate chips on a 54 by 54 grid. In the end, we used 2232 milk chocolate chips giving an estimate of 3.0617 having an error of 0.0799.
Arizona State University’s Imagination and Climate Futures Initiative held a short story contest to write “climate fiction,” judged by Kim Stanley Robinson and others; now the best stories have been collected in a free downloadable ebook that includes a forward by Robinson, and an interview with Paolo Bacigalupi.
Machinist/sculptor Christ Bathgate (previously) can’t keep up with demand for his latest “pocket sculpture,” a kinetic piece that’s designed to be soothing to fidget with.
In July, the Electronic Frontier Foundation filed a federal lawsuit on behalf of Dr Matthew Green, a Johns Hopkins Information Security Institute Assistant Professor of Computer Science; now the US government has asked a court to dismiss Dr Green’s claims. A brief from EFF explains what’s at stake here: the right of security experts to […]
Amazon’s Audible is hands-down the most popular place to find audiobooks. With its library of over 180,000 books, Audible has the biggest audiobook selection in the world, and a membership gets you a free book each month. You can sync Audible across multiple devices, so you’ll never lose your spot whether you’re on your computer or your phone.This […]
#1. A-Audio Legacy Noise Cancelling Headphones with 3-Stage Technology The A-Audio Legacy Headphones are the Boing Boing Store’s best seller this month, and it’s easy to see why. With 40mm drivers, powerful circuitry, and memory foam padded circumaural ear cups, these are clearly super high-quality headphones. Plus, the patented 3-Stage Technology lets you toggle between passive […]
Vaping is getting more mainstream by the day, which means there’s been an influx of quality yet affordable vaporizers on the market. We’re particularly excited about the APX Wax Vaporizer Kit, which is an easy-to-use, high-quality vape that works with both dry herbs and waxy concentrates.If you’re a beginner trying to get into vaping, the APX […]