ABSTRACT
This chapter explains the ideas of the Greek philosopher Democritus, who observed that water behaved in similar ways to sand, it could be stirred, poured and mixed. To be a great science teacher, it is important to have a good understanding of the principles that underpin the subject, so that one can generate discussions like this. A good grounding in the philosophy and history of science will help a person to ask good probing questions, to help make the links between experiments and theories and to reinforce recurring ideas about evidence, measurement and uncertainty. There are many ideas in science that a person can bring to life for students by telling the story of how they developed over time. The theory of evolution is one of mankind's greatest achievements. The discovery of genetic material in every cell and the idea of heredity weave beautifully into the evolution story.
