How can a magnifying glass or reading glasses make things appear larger? Scholars simulate moving a lens closer or farther from an object to observe the resulting image. They also alter the lens focal length. The simulation shows the side and the front view as each change is made, so individuals get a complete look to better understand the concept.

Concepts

mirror images, lenses, convex, magnifying glasses

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Additional Tags

science

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Instructional Ideas

• Set up a similar observation in the classroom and allow students to measure and move the lens

Classroom Considerations

• Requires a free CK-12 account to access the interactive
• Assumes prior knowledge of interpreting graphs and understanding hyperbolas

Pros

• Graphs the changes with each trial
• Provides a walk-through video explaining the science in depth

Cons

• Introduction video not formatted for small screens and some text is cut off

Common Core

RST.6-8.4 RST.9-10.4 RST.11-12.4