1 Know Individual skills Skills 2 Integration Understand principles Strategy K1 Explain what is meant by a theory K2 State examples of theories in science K3 Describe the role of evidence in supporting theories K4 State examples of theories that have changed K5 Explain role of new evidence in changing theories K6 Explain role of argumentation in modifying theories K7 Understand the role of a theory in science Evidence Measurements or observations offered to support or oppose a theory A1 Explain why it sometimes takes a long time for a theory to be changed A2 Explain why argumentation is essential for the development of robust theories A3 K8 Understand how scientific ideas have changed Key words K9 Apply A4 Argumentation Using K10 logical reasoning, debate and negotiation to reach conclusions