Each learning path is one chapter: a guided route through a topic, one small course at a time. Pick a class to see its chapters in order.
Bacteria double every twenty minutes, a population of deer levels off when food runs short, and a cross between two pea plants gives tall and short offspring in a three to one ratio. In this chapter you write programs that grow populations step by step, fit growth curves to data, and cross plants and count the offspring. It goes with the chapters How do Organisms Reproduce? and Heredity, so each program checks what you learn there.