Lynx Toss
Predator–prey cycles. Toss predators onto a habitat of prey; the class screen shows the boom-and-bust cycle and the phase plot. Lynx and hare, wolves and moose, otters and urchins, or Gause's protists.
Live experiments for the classroom. Every phone is one sample; the class screen pools them.
Type the room code on the screen.
Predator–prey cycles. Toss predators onto a habitat of prey; the class screen shows the boom-and-bust cycle and the phase plot. Lynx and hare, wolves and moose, otters and urchins, or Gause's protists.
Island biogeography. Each phone is an island, small or large, near or far from the mainland. Colonists arrive, species die out, and the class screen shows each island type settling at its own equilibrium, the turnover, and the species–area relationship.
Disease spread. Each phone is one person; vaccinate part of the class and watch herd immunity appear on a live S-I-R curve.
Disturbance. Each phone is a patch of rocky shore with its own storm frequency; the class screen shows the intermediate-disturbance hump.
Climate and range shifts. Each phone is a species on a warming mountain: move upslope or run out of mountain.
No accounts. Phones keep an anonymous ID so a group's habitat survives a reload.