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Lights & Sounds Unit Share
Mystery 5 of 6
How could you send a secret message to someone far away?
Mystery 5 image
How could you send a secret message to someone far away?
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Beginning Complete!

You've completed the Exploration & Activity!

If you have more time, view the assessment, reading, and extension activity in the extensions.

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Extensions

Below are ideas for extending this topic beyond the activity and exploration you just completed.

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Readings: Traffic Lights

These Common-Core-aligned readings are free with registration on ReadWorks. All include comprehension questions.

  • This short reading reviews how traffic lights work and how to safely cross an intersection. (Grade K).

  • This short reading tells of the invention of the modern traffic light by Garrett Morgan, an African American inventor. (Grade 1)

  • For more advanced readers, this reading tells of Garrett Morgan’s inventions. (Grade 2)

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Video & Reading: Fireflies

  • It’s a Firefly Night by Dianne Ochiltree tells the story of a girl chasing the bugs and putting them in her jar. Don’t miss the fascinating facts about fireflies at the end! This online book is free with registration on Epic! (Ages 4-6)

  • This episode of SciShow Kids will tell you everything you want to know about fireflies.

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Extension Activities: Secret Codes

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Overview
Grade 1st
Topic Properties Of Light & Sound
Focus Light, Communication, & Engineering
Print Prep
Activity Prep

In this Mystery, 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

Number of students:
Markers
Preferably 1 red, 1 blue, and 1 green. You can use three other colors, but make sure they are very different from one another. Similar colors (red, pink, and orange) can lead to confusion.
Details
45 markers
LED Flashlights
30 flashlights
Color Codes printout Print 30 copies
Prep Instructions

Make sure you have enough space. Pairs of students will need to be at least 5 or 6 feet apart, and have a clear line of sight to each other. Homeschool students working alone will need a partner to do this activity.

You will need to do this activity in the dark with the lights off and curtains drawn.


Classroom Management Tip

Flashlights are very fun, but can be very distracting! We suggest waiting to distribute flashlights to students until Step 6 of the activity.

Overview
Grade 1st
Topic Properties Of Light & Sound
Focus Light, Communication, & Engineering
Extensions