Survive the Island

What your child will figure out

• Identify heritable trait variation among individuals in one population.
• Predict which existing trait an environmental selection pressure will favour.
• Use before-and-after frequency bars to explain how differential survival and reproduction shift a population over generations.
• Transfer the model to a reversed habitat and generated fur-colour and beak-size pressures.

The levels

1. Meet the pufflings

   Observe light and dark inherited fur variants together before selection and recognise variation within one population.

2. Shadows hide survivors

   Predict dark-fur camouflage, run forest selection, and observe dark fur rise from 50% to 75%.

3. The great island drought

   Connect hard seeds to greater big-beak survival and reproduction across three generations.

4. A new shore

   Transfer the model to a reversed pale habitat and explain why light fur increases even when initially rare.