Interactive

Cassegrain Telescope

Curated and Reviewed by Lesson Planet

How does a telescope magnify images? Learners first watch a tutorial explaining the basic construction of a telescope. Then they interact with a simulation that allows for changes in the location and diameter of the reflecting mirrors. As they make the changes, the path of the light changes and impacts the size of the reflected image.

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Additional Tags
Instructional Ideas
  • Use the Challenge Me questions as guiding questions as pupils manipulate the interactive
  • Bring examples of convex and concave mirrors for classes to reference as they work with the manipulative
Classroom Considerations
  • Requires a free CK-12 account to access resources
Pros
  • Interactive allows for flexible exploration without specific constraints
  • Introductory video provides background information prior to the simulation
Cons
  • None