Speciation- "The way natural selection leads to the formation of new species." (Johnson, Speciation shows the steps traits took through natural selection that causes significant enough changes to form a new species.
In this scenario biodiversity drives natural selection as well as evolution. This relates to the class because you can see how the natural selection of the beaks creates biodiversity among the species, therefore creating more resilience in that species.
Better than spoons, spatulas, sticks. Clipbirds activity from Berkeley bolsters student understanding of natural selection. Students use different size binder clips to represent the different size beaks of Darwin's finches.