The teacher will submit an equation using activity center but will not show the students the equation.
Before the Activity
Students should have access to either the TI-83 Plus or TI-84 Plus family of calculators.
During the Activity
The teacher will start the activity by setting up activity center so the students can submit equations. You will need a way to hide the screen from the students.
My monitor has a picture freeze, which allows me to submit the equation without them seeing it. Once you submit the equation, show just the graph of the equation and have the students try to guess the equation that will match it.
After the Activity
Review student results:
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary