In science today, year 6 learned about natural selection and survival of the fittest by testing how successfully different ‘beaks’ could pick up grains of rice. We carried out a fair test by repeating each stage several times and calculating the average, while keeping all other variables the same. We now have a better understanding of why finches’ beaks have adapted over time to suit the diets they have in their particular habitats and why the population of those who aren’t suitably adapted eventually decline in population and face the danger of becoming extinct.