For instructors
Projection mode: fuel trim cases for class
One case, large enough for the back row, with the answer hidden until you reveal it.
How to run it with a class
Walk the class through the freeze frame, the grid and the chart, take their calls, then reveal the answer and the reasoning. Every case has a code you can write on the board.
Choose a case
The same code shows the same case on every screen, so students can open it on their own devices while you project it.
Pick a tier and press New case, or open a code a colleague shared.