Guided notes across five pages show 4th grade students how people send messages with patterns over long distances, following NGSS 4-PS4-3. Students fill blanks on codes, then meet Morse code, the telegraph, and computer code made of ones and zeros. A mini Morse chart lets them decode a word the teacher taps. Later pages compare a flashlight code with a drumbeat code across a football field. Students then invent a code for a 3-letter word from claps and stomps.
4-PS4-3
“Generate and compare multiple solutions that use patterns to transfer information.*”
The Comparing Solutions page, where students weigh the flashlight code against the drumbeat code, and the final task comparing their own clap-and-stomp code with Morse code.
Three blanks establish that a pattern repeats in a predictable way and that the pattern, not the wave, is the message. A prompt asks why codes are sometimes needed instead of talking.
Blanks cover dots and dashes, telegraph wires, and ones and zeros. A mini Morse code chart with eight letters supports a decode task, and the key gives the tapped word as HI.
Solution A is a flashlight code and Solution B is a drumbeat code for a message across a giant football field. Students fill in a strength and a weakness for each, then pick the better one for a bright, sunny day.
Students design a clap-and-stomp pattern for three letters, following the example A = 1 clap, 2 stomps. They then name one strength or weakness of their code compared to Morse code.
Tap the code
Tap H and I on the desk for the decode task. The chart shows H as four dots and I as two, so students hear the pattern before they read it.
Field test
Take the class outside and try both solutions for real. Students then check their sunny-day answer against what they could actually see and hear.
Partner challenge
Pairs trade clap-and-stomp codes and try to decode each other's 3-letter word. A word that fails to come through gives students a real weakness to write about.
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