Watch these numbers do-si-do🎶

Pac-Man animation created with ONE equation line (+ one additional line for slider) in @desmos.com by my student Maddy. I chipped in with the disappearing dots. www.desmos.com/calculator/v...

When a good Math problem yields a surprisingly tidy solution, that can be fun. But sometimes I really appreciate it when the problem refuses to spit out those tired old tidy numbers you've seen n→∞ times before. @geogebra.org www.geogebra.org/m/yfdjuqta #calculus #optimization

Two identical cylinders bump into each other at a corner... www.geogebra.org/m/ennzeuek @geogebra.org #calculus

Surface area of a sphere, intuitive approach with @geogebra.org ? #calculus
www.geogebra.org/m/eb3ndfur

Totally illegal "cancelling" of fractions that still yields the correct result 😱

Mardi Gras today, so time for the once-a-year shearing

And this post elsewhere from user @potetoichiro

Wow, down another rabbit hole, and there are more of those than I thought! Along the way I saw another post attributing this one to James Tanton: 12345679/98765432 = 1/8

Great question for advanced students: Under what conditions does this flawed application of the zero-product property produce correct results? (Of course, ask with caution, at risk of creating more confusion🫠)

I wish I didn't have to ever see this again! Too often having to remind that the ZERO product property actually requires a zero on one side of equation. But at least here's one contrived case where the incorrect algebra yields a correct solution 😜

Every December a math meme makes the rounds in which an equation is algebraically rearranged to yield "merry = x-mas." Not really trying to be grinchy, but in the interest of providing an alternate viewpoint: