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OurStory: Life on the Water Lenses and Lighthouses

Teacher Guide, page 2 of 4

  • observation: an act of recognizing and noting a fact, sometimes involving measurement

  • order: level, rank or category

  • refraction: a change in direction that happens when a light ray passes from one material (like air) into another (like glass) in which its speed is dierent

  • seafarer: a person who operates or assists in operating a ship

MATERIALS

  • Directions sheets (attached)

  • Background sheet (attached)

  • Thinkabout sheet (attached)

  • How Things Work: The Fresnel Lens presentation (downloadable from http://americanhistory.si.edu/ourstory/activities/water/)

  • Digital presentation software such as Microsoft PowerPoint (Open Oce Impress is available for free download at http://download.openoce.org/index.html.)

  • One computer or more

  • Art supplies

  • Sheet magnifier, overhead projector, or car headlight (optional, see Directions step 3)

PREPARATION

Read Keep the Lights Burning, Abbie together. Keep the Lights Burning, Abbie is a work of historical fiction about a teenager who saves the day by running her father’s lighthouse during a storm. For tips on reading this book together, check out the Guided Reading Activity (http://americanhistory.si.edu/ourstory/pdf/water/water_reading.pdf).

STUDENT PERFORMANCE CRITERIA

  • Describes a Fresnel lens.

  • Uses careful observation to describe an object.

  • Applies knowledge of Frensel lens to development of a new invention.

STANDARDS NCHS History Standards K-4 Historical Thinking Standards

2H: Draw upon the visual data presented in photographs, paintings, cartoons, and architectural drawings.

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