Today was chaos. Algebra started finding linear regressions on graphing calculators. I have a set of 15 (identical?) calculators, however half of them have an out of date operating system. This baffles me because they all were shipped and arrived at the same time. So when we started imputing commands to find regressions different menus popped up.
I am extremely thankful for the #MTBoS response on Desmos having a regression tool, we are going over that tomorrow on cellphones and iPads. I am not sure how to tackle the fact that all students don’t have smartphones with Desmos capability. The computer labs are booked and it feels almost unfair to ask students to find the line of best fit on calculators when Desmos is so much easier.