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How could you send a secret message to someone far away?

How could you send a secret message to someone far away?

Lesson narration:
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Can`you`think`of`a
way`to`communicate
YES`or`NO`to
someone`using`only
a`light?

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light


1 of 4

what comes from the Sun and lamps and makes it possible to see things
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sound


2 of 4

vibrations that you can usually hear with your ears
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communicate


3 of 4

to give and get information
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invent


4 of 4

to create something new, often an object or a way of doing something
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Lesson narration:

Activity Prep

Print Prep

In this lesson, students practice using light to communicate information. In the activity, Secret Signals, students work in pairs to build a device that solves the problem of communicating over a distance. They send secret messages to one another using light and colored markers.

Preview activity

Exploration

17 mins

Wrap-Up

3 mins

Extend this lesson