Kendra Lockman

@DavidKButlerUoA @WRoberts3 I love that you're both using this comment to reflect on your teaching. :)

@WRoberts3 Think jinx! I was also pondering how I do this to students all the time.

I find it very frustrating when you show someone something you've made, and the only comment they make is a suggestion of how to change it or tell you how they would have done it.

@MurrayH83 These patterns are so lovely. It looks like you're enjoying your blocks. :)

Pattern block play with hexagons! #21CenturyPB

I had long described limits to students as trying to predict where you might end up, if you were somehow traveling along a function graph and it was really foggy.

Okay, here's the thing that I was building. This is an idea that I had brewing for introducing the concept of limits. #mtbos #iteachmath desmos.com/calculator/ue1…

I still haven't mastered parametric coloring in @Desmos. Anyone wanna help? I'm trying to create a graph that only graphs within a "foggy window" around a given point. desmos.com/calculator/fom… #MTBoS #iteachmath

@MurrayH83 The bottom left is the only one in which green tiles share some edge

Which one doesn't belong? #WODB

@MurrayH83 The top left is the only one in which red tiles share some edge

@MurrayH83 The bottom right is the only one without horizontal edges.

@MurrayH83 The top-right is the only one that is not a hexagon

@MurrayH83 The bottom right is the only one that is not 2-fold rotationally symmetric.

@aknauft @Desmos That's perfect, thanks. I am still struggling with making parametric color intuitive.

@aknauft @Desmos Thanks! The image with transparent gradient is a slick move... and it might even help with my greater purpose.

@jamestanton I don't think we could get more than 3 in arithmetic progression, because the only way to have a prime result is to have (n-1) of the numbers be units, and there are only 2 units in the integers.

@jamestanton Yes! -1 * 1 * 3 is prime!

Each prime number is the product of three integers. Is there a a prime number that is the product of three integers that happen to be in arithmetic progression? [ prime = a(a+k)(a+2k) ] How about four?

@SweenWSweens Hey! I'm trying to play both of these with my kiddo, but the codes are inactive. Can you re-activate? (We'll probably play on Tuesday)

I made a new escape room in Desmos! Desmos Escape 2: The Museum Play it here: student.desmos.com/join/tq5tp6 You don't have to log in, but if you do it saves your progress in case you want to come back to it.

@dpscher It didn't in the original, but this one does. desmos.com/calculator/lbz…

@klockmath Does the Desmos model show the 3-pt version?

I made this as an exploration of geometric definitions of conics. Comments welcome. desmos.com/calculator/nfq… #iteachmath #MTBoS

@dpscher I'm thinking a lot about the features and curious how intuitive they are. Building this thing in Sketchpad may be easier, but I wonder if the desmos version is more intuitive for someone who's coming in fresh. I can't tell because I'm def *not* fresh.

@dpscher I just watched the recording of yesterday's desmos live. So exciting. I was definitely thinking about this construction!

My favorite conic sections construction. Building it with Sketchpad is simpler, but you can't (yet, anyway) build it from scratch in Web Sketchpad. #desmos. Link: desmos.com/geometry-beta/…

btw my desmos graph was influenced by @dpscher's book Exploring Conic Sections with Sketchpad. I appreciate the encouragement to play and explore in the book, and I equally appreciate how easy it is to build (and extend) conic sections using the distance function in Desmos.

omgosh I just blew my own mind by "extending" the definition of an ellipse to include a 3rd point. I thought I would get something roughly akin to wrapping a string around 3 thumbtacks, but I did not.