Get a free trial until June 30, 2026!
New members get full access to our science units, hands-on activities, mini-lessons, & more!
Back > Share
How could you send a secret message to someone far away?
Lights & Sounds Unit | Lesson 5 of 6
Back > Share

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

Lights & Sounds Unit | Lesson 5 of 6
Lesson narration:
English Spanish
Scroll for prep
Full Screen
Controls Icon Exit Full Screen
Video trouble?

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

Full Screen
Controls Icon Exit Full Screen
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Slide Image
Full Screen
Controls Icon Exit Full Screen
Slide Image

light


1 of 4

what comes from the Sun and lamps and makes it possible to see things
Full Screen
Controls Icon Exit Full Screen

sound


2 of 4

vibrations that you can usually hear with your ears
Full Screen
Controls Icon Exit Full Screen
Video trouble?

communicate


3 of 4

to give and get information
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Slide Image

invent


4 of 4

to create something new, often an object or a way of doing something
Full Screen
Controls Icon Exit Full Screen
🎉 That’s it for this lesson! How did it go?
Sign up now for more great lessons!
Sign up
Full Screen
Controls Icon Exit Full Screen
Lesson narration:
English Spanish

Grade 1

Light, Sound, & Communication

Light, Communication, & Engineering

1-PS4-4, K-2-ETS1-2

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
I don't have a Mystery Pack
In your Mystery Pack Lesson Bag
Color Codes printout 1 per student
In your Mystery Pack Shared Supplies
LED Flashlights 2 flashlights per pair
Not included in your Mystery Pack
Color Codes printout 1 per student
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.

 3 markers per pair
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.

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.

Exploration

17 mins

Hands-On Activity

25 mins

Wrap-Up

3 mins

Grade 1

Light, Sound, & Communication

Light, Communication, & Engineering

1-PS4-4, K-2-ETS1-2

Slow internet or video problems?
Credits