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Evolution and natural selection
Why living things are not all the same, how variation, inheritance and survival lead to natural selection, the famous examples of the Galápagos finches and the peppered moth, why some bacteria become resistant to antibiotics, and the evidence for evolution. Based on two OpenStax biology textbooks, Encyclopaedia Britannica and the US Centers for Disease Control and Prevention. Three ages, each with a text, an experiment, a game, a quiz, a printable worksheet and a teacher sheet.
Ages 6–7Same but differentChildren look a bit like their parents, but not exactly. Find out why that matters, meet birds whose beaks fit their food, and play 'hungry birds' to see why the best-hidden moths survive.Ages 10–11Natural selectionHow Darwin and Wallace explained the variety of life, the three ingredients of natural selection, the finches of the 1977 Galápagos drought, the peppered moth, and how fossils and bones show that living things are related. With a fair-test beak investigation.Ages 15–16Evolution: evidence and numbersWhat 'theory' means in science, the genetic basis of natural selection, calculating changes in the frequency of a variant across generations, antibiotic resistance as evolution in action, and the five main lines of evidence for evolution.