Scientific method: Testing Idea
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The document discusses the scientific method, outlining that students will learn to formulate hypotheses, design simple experiments to test hypotheses, and analyze results to accept or reject hypotheses. It provides an example of observing a dropped phone signal in a lift, hypothesizing the signal is lower in metal lifts, and designing an experiment to test signal strength in mock lifts of different materials to evaluate the hypothesis. The scientific method aims to methodically test ideas through observable, testable experiments.
Scientific method: Testing Idea
- 3. Learning OutcomesBy the end of the class, my students will be able to :Formulate a scientific hypothesisDesign a simple experiment based on the formulated hypothesis
- 4. The Big Picture of Scientific Method
- 6. Start from an Observation: An ExampleHandphone’s signal drops when we enter the lift
- 7. Scientific Hypothesis and ExperimentHypothesis:The signal inside a metal lift is lower than inside other materials.Main criteria:Test-able.Test one idea only.Experiment:
- 8. To test: Measure signal strength in a mock up lift that is built using different materials (metals, wood, glass, etc).
- 9. Expected outcome: signal strength in metal mock up lift is lower than other materials.
- 11. What is the expected outcome?
- 12. Accepting or rejecting hypothesisMore ExamplesRevising a hypothesis:There is no signal inside a metal lift.The signal drops when the handphone is inside a confined lift and the lift is moving.Signal is low when the lift is far from the repeater point.
- 13. Summary