Pupils often wonder how we know the distance to various stars. Starting with a thought experiment and progressing to a physical experiment, they determine the brightness and distance to various stars. The evaluation requires critical analysis and application of learning.

Concepts

stars, light, luminosity, inverse square law

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Additional Tags

science

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Instructional Ideas

• Extend the lesson to find the distance to a real star

Classroom Considerations

• Prior knowledge of Microsoft Excel is helpful, but a pre-activity review could suffice
• Learners should have completed or be currently taking Algebra II
• The lesson best fits prior to learning about the behavior of light
• Use fresh batteries for consistent light production

Pros

• The lesson is designed using a 5E format
• The connections to math encourage class members to practice applying formulas

Cons

• None

Common Core

RST.9-10.3 RST.11-12.3