Hey! You thought I forgot, didn't you? DIDN'T YOU?! (Excusable. That would be totally in character.) I just arrived a few days ago at the best mathematical summer thing in the world, the Summer Program in Mathematical Problem Solving, where I'm teaching a course called Math Team Strategies. It's so great, you guys. The staff is the bomb. The campers get here tomorrow. Now for some faves:
Who doesn't love a sweet math song? Okay there are people but you have to admit that this is delightful, even if you're not a singing-in-math-class type. Also if you need to catch up on Sean's (and other members of his school's) previous works of art: here's Graph Shop, f(u), and the classic Slope Rider.
(My favorite use of Pear Deck is asking kids to find numbers for (x, y) that make an equation true, and then each student plots that point on the Pear Deck slide. The collective points lie along a line, or a circle, or whatever. Connection between multiple representations: made. I used that move on them like a dozen times this year and it never got old. Here's a straightforward post by Jon Orr showing what this can look like.)