Explore geographical models
Make a prediction, change one condition and explain what happens.
Rainfall and runoff
Change rainfall, surface cover and soil wetness; compare a simplified water budget.
A coastal sediment budget
Change incoming sediment and local retention; trace gains and losses between two beaches.
A settlement flood-risk decision
Compare fictional risk reduction, costs and habitat effects under a fixed budget.
These models use invented coefficients and simplified systems. They teach relationships and comparison, not forecasts or engineering design.