Is Your Calculator Modelled Properly?

You've got to be able to visually show the kids the buttons that you as a teacher pressing on the calculat. It's really interesting when they come out of a different answer on the calculatora. And sometimes the er its like l, you just had to do t it might be a trig question. Or they and haven't squared a negative properly. Yt, there's common th's common mistakes. Whenc you get experience, you can kind of say, if they said, you miss, i got adiferent answer. If you know what the common mistakes are, then you can say, just look at what's on your screen. Tell me if that's not what