Students model natural selection using coloured frog cards in two different environments (pond and forest). Predators (snakes) remove frogs based on visibility in each environment, and offspring are produced according to genetic probability tables.

- Use frog cards and a dice, and follow the instructions in the links to model natural selection in a frog population.

📄 Natural Selection Investigation - Mr Fraser: https://petergef.weebly.com/natural-selection-investigation.html

📄 Natural Selection Frog Selection Activity - Studocu: https://www.studocu.com/en-au/document/wavell-state-high-school/biology/natural-selection-frog-selection-activity/101846664

• Change predator numbers (e.g., 10 or 20 frogs eaten each year) to see effects on survival.
• Introduce an environmental change (e.g., pond vegetation colour shift) and track changes in which frog color is favoured.
• Allow students to design their own predator–prey rules to model different ecosystems.
• Attempt to program a computer to model the simulation.

None

• Why are red frogs most likely eaten in the pond and yellow frogs in the forest?
• How did the frog populations change over time in each environment?
• How does this classroom model differ from real frog populations in nature?
• What role does natural variation play in the survival of species?
• How might environmental changes affect which frogs are most successful?
• What conclusions can be drawn about natural selection from this model?