Things learned on the graphing calculator today:
1. If you hit the store button it'll save a value for you so you can easily use it later. We were using phi to determine if a person's face fit the golden ratio. Homework was to do the same for their face. Some of the kids were really freaked out that I had pictures of them to hand out! (Adapted from this activity at mathbits.com.)
2. There's a delete button!
3. If you hit 2nd on/off it will lighten or darken the screen.
4. To see a y-value in a table you must have an equation in y = .
5. The ^ is your exponent button.
The scary thing is that 3 out of these 5 discoveries were made by my Precalc sophomores/juniors. If only they played with/explored their calculator as much as they do their phones!