Original PromptStudents will identify variables and controls in an investigation and understand what makes a test "fair.
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45-Minute Timeline:
• 0:00–5:00 | Opening/Hook
◦ Teacher says: "Imagine I want to know: Does a plant grow better in sunlight or in shade? I put one plant
on a sunny windowsill and one in a dark closet. After two weeks, the sunny plant is taller. Can I say that
sunlight makes plants grow? Not so fast! Let me ask you: What else is different between these two
plants?"
◦ Student activity: Stud...
This resource provides an in-depth exploration of conducting fair tests in scientific experiments, focusing on the importance of isolating variables while controlling other factors. It uses the example of growing plants under different sunlight conditions to illustrate how a fair test is established. Key concepts include the definition of variables and controls, the significance of maintaining consistencies in experiments to ensure reliable results, and the risks of bias that can invalidate findings. Through various scenarios, it guides students in identifying independent variables and necessary controls, reinforcing the foundational principle of one variable per test for scientific integrity. The resource ends with a reflection on the importance of fair testing in scientific inquiry and hints at future experiments.