Run a debate and compare votes before and after the speeches. The projector traces who stayed, who crossed and who remained undecided, using counts rather than names. The final majority and the side that moved the room can be different.
Or keep the voters fixed and change the boundaries: students draw electoral districts on the same fictional town, then compare which parties win seats. Use the room’s own maps to discuss representation, fairness and who should draw the lines.
A practice run with fictional students. No real classroom or join code is created.
Try an answer on the phone. Lead the lesson from the screen.
On their phone
You are presenting
Setting up the room…
Draw five voting districts for one side, then redraw the same town as fairly as you can. Compare the room’s maps with every legal map, examine up to two submitted plans, and see where the room agrees on borders.
Up to 600 people
GerrymanderingElectoral representation
Two sides argue a motion, turn by turn against the clock, while the room votes before the first speech and again after the last. Then every vote walks from where it started to where it ended: who held, who crossed, and which way. The side that gained more ground moved the room, and it need not be the side that won the vote. Counts only, never names; each phone sees its own path. The motion is one line to change.
Up to 600 people
PersuasionDeliberation
Every activity here ships with Decka — sign up free and add any of them to your library from the built-in classroom catalog.
How it works
Sign up free and pull the activity from Decka's built-in classroom catalog — one click copies it into your own library, ready to run from Decka or inside PowerPoint.
Everyone scans from the projector and plays in their phone's browser. No app, no account, nothing to install.
You move the activity phase by phase: collection closes, the boards resolve on the big screen, and the debrief happens while the results are still up.
Start free. No credit card required.
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