Learn: How Scientific Ideas and Methods Change Over Time

Welcome!Today we’ll explore how scientific ideas and methods evolve over time. This lesson is personalised for Year 11 students, so let’s dive in and learn why this is such an exciting topic!

Why do scientific methods change?Scientific methods change over time as new technologies, evidence, and ideas emerge. This allows scientists to improve accuracy, develop new theories, and refine existing ones. Progress in science often builds on previous discoveries, leading to better understanding of the natural world.

The role of evidence in scientific changeNew evidence often challenges existing ideas, leading scientists to revise theories. For example, the discovery of bacteria and viruses changed our understanding of diseases, replacing older ideas about 'bad air' causing illness. Evidence helps science move forward by revealing the truth about how the world works.

How technology drives scientific progressAdvances in technology often lead to breakthroughs in science. For example, the invention of microscopes allowed scientists to see cells and microorganisms for the first time, revolutionising biology. Today, technologies like DNA sequencing continue to expand our knowledge.

Scientific collaborationCollaboration between scientists allows ideas to be shared and tested across the world. For example, the development of vaccines often involves experts from biology, chemistry, and medicine working together to solve complex problems. Sharing knowledge globally accelerates progress.

Review Time!Great work! You’ve learned about how scientific ideas and methods evolve over time. Let’s test your understanding with some final questions.