In the spirit of fun and collaboration, I set out to create graphs that brought together my favorite online math tools. G(x) is GeoGebra and D(x) is Desmos (thanks to the folks at Desmos for the title concept). With encouragement from my GeoGebra tweep, John, and shading help from my Desmos tweeps, Mary , Bob,...
Read more →OK, your kids come in the room, they chat, they stall, they complain, this one has no pencil, this one wants to go to the nurse, these 4 “need” the bathroom, those two are “secretly” texting, and that one is putting on makeup…sound familiar? Teaching 3 freshman classes at the end of the day,...
Read more →This is a TI-CBR2, sometimes called a sonic ranger. No, not that kind… A sonic ranger measures the distance to a moving object by bouncing ultrasonic sound off the object and timing the echoes. The data, taken about every 0.05 sec., is read into a computer, which then plots the distance, velocity, and acceleration....
Read more →One applet… Three equations… It’s Quadratic-Palooza!
Read more →About a year ago, I started a Twitter account. I tweeted a few comments and photos about the Connecticut Student Film Festival, which I was supposed to attend, but then got sick. I looked in on Twitter once in a while after that, but it didn’t seem to have much appeal for me. So, I...
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