Beautifully done!
Do you know why this proof works? How can we be sure the red and yellow areas don’t change as they slide around?
Thank you to Dan at Math 4 Love, who pointed me to Vi Hart’s math doodles. (The rest of her page is well worth exploring, too!) Kitten really enjoyed this one and immediately sat down to create her own version of the OuroBorromean Rings…
I have been enjoying James Tanton’s website. In this video, Tanton explains a foolproof method for creating Egyptian fractions:
See more posts on Egyptian math.
For my Calculus for Young People students: Beware! We studied a few infinite series that converge to a nice, tame sum — but not all series are so well behaved.
Check out this mind-blowing video from the author of Math Without Words:
[See also: Harmonic Series Quotation and For Niner: A Bit of Calculus Fun.]
Students headed into finals week need to blow off some steam, so let’s have a little fun with calculus. Hey, Niner, does this look familiar?…
Nerds battle hungry football players who want to eat their giant fractal Dorito creation:
For more details on this video (and photos of the fractal’s construction), check out the Blown Apart Studios page. I’m looking forward to their next project, Nerd High, a musical comedy set in an alternate reality where nerds rule the school and jocks are the outcasts.
While browsing the Kim Komando website for ideas I could use in my blogging class, I followed a rabbit trail through Kim’s video archive. I think we will try this in Math Club next semester:
If the embedded video doesn’t work on your computer, you can find the original here: Unbelievable Paper Transformer.
Simon posted a template for the puzzle at his MathsClass blog.
Hat tip to Dan at mathrecreation.
Denise Gaskins' Let's Play Math 