Green Flask Science

Free simulators

Interactive models for AP Environmental Science, sorted by unit. They run in any modern browser, with no login and no download.

Unit 1: Ecosystems

APES / Topic 1.1

Species Interactions Simulator

Run predation, parasitism, mutualism, commensalism, and competition. Test each sign with controls and trials, then try the mystery pair.

Unit 3: Populations

APES / Topics 3.6 to 3.9

Population Pyramid Simulator

Read age structure diagrams, change fertility, life expectancy, and migration, predict the future to 2100, and solve a mystery country.

More simulators are added unit by unit.