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...
Read more →I love making animated shorts with GeoGebra and iMovie. These films show geometric relationships in interesting ways! This one is a fun project for students who may not have the technical or artistic ability to create an original image.
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