Here’s another math blog for your RSS reader: Math 4 Love. Kitten laughed out loud at their One-Minute Math Video.
The Problem with Manipulatives
You may have seen this video making the edu-blog rounds:
Be My (Math) Valentine
Just as I was looking for a creative Valentine’s craft for Kitten, this showed up in my inbox:
Xi at 360 provides step-by-step instructions, with photos:
And for more Valentine’s Day fun:
Days of Christmas with Vi Hart
If you haven’t subscribed to Vi Hart’s blog yet, what are you waiting for?
Merry Christmas!
Visual Proof of the Pythagorean Theorem
Beautifully done!
[From Girl’s Angle: A Math Club for Girls, via Albany Area Math Circle.]
Do you know why this proof works? How can we be sure the red and yellow areas don’t change as they slide around?
Fun with Math Doodling
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…
Math Teachers at Play #32 via Point of Inflection
[Sung to the tune of the Gilligan’s Island song.]
The carnival is up and now it’s time to click away.
Go check out all the links in this month’s Math Teachers at Play.
There’s algebra, geometry, and some Egyptian vids,
Equations, jokes, domes, real numbers, and games for all the kids….
Egyptian Math: Fractions
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.
A Harmonic Series Paradox
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.]
Denise Gaskins' Let's Play Math 