Send a message with flags
Make simple semaphore flags and use arm positions to send coded messages across a yard, then decode partner messages to practice communication.
Step-by-step guide to send a message with flags
WORLD FLAGS | Learn Flags of Different Countries | Country Flags for Kids | Kids learning
Step 1
Gather all the materials and bring them to a flat workspace outside or in a big room.
Step 2
Cut two squares from the colored paper or cloth about the size of your hand.
Step 3
Tape each square securely to the end of a stick to make two flags.
Step 4
On the sheet of paper draw a large circle and mark 8 evenly spaced points like the hours on a clock.
Step 5
Write the numbers 1 through 8 next to each marked point around the circle.
Step 6
Make a secret alphabet by assigning every letter A to Z to a pair of numbered positions and write each letter next to its pair on the paper.
Step 7
Practice left-arm positions by standing still and holding only the left flag at each numbered point for two seconds.
Step 8
Practice right-arm positions by standing still and holding only the right flag at each numbered point for two seconds.
Step 9
Stand across the yard from your partner and send one letter using the two flag positions from your chart while your partner watches and writes down the letter.
Step 10
Switch roles so your partner sends a short 3-letter word using the chart while you decode and write it down.
Step 11
Share a photo and a short note about your flags your chart and one message you sent on DIY.org to show your finished creation.
Help!?
What can we use if we don't have colored paper, cloth, or sticks?
If you don't have colored paper or cloth or a stick, cut hand-sized squares from sturdy cardboard or an old T‑shirt and tape, staple, or rubber-band them to a pencil, chopstick, dowel, popsicle stick, or straw instead of the taped stick in the instructions.
What should we do if our partner can't see the flag positions or we keep missing the two‑second holds?
If visibility or timing is a problem, make the squares larger and brighter, stand a bit closer than 'across the yard', darken the 8 clock points and numbers on your chart with a thick marker, and practice holding each left or right flag position for a clear two seconds before sending letters.
How can we change the activity for younger or older children?
For younger kids, reduce the chart to fewer positions (for example 4 points) and send single letters with adult help on cutting/taping, while older kids can map all 26 letters to pairs, keep strict two‑second timing, and swap longer words instead of the 3‑letter practice.
How can we extend or personalize the flag message project once we've finished the basic steps?
Decorate and label your flags to match the pairs on your drawn circle, add a printed codebook or color‑key next to the numbered points, record a video of a message to upload with the required photo and short note to DIY.org, or try composing longer secret sentences using your chart.
Watch videos on how to send a message with flags
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Facts about semaphore signaling for kids
🚩 Flag semaphore uses two handheld flags and the angle of a sender's arms to spell out letters A–Z.
⏱️ Skilled semaphore operators could pass messages across a yard or between ships at several words per minute.
🌊 Before radio, navies and merchant ships relied on flag semaphore and signal flags to communicate over distances.
🔦 At night, crews switched from flags to signal lamps (like the Aldis lamp) so messages could still be sent in the dark.
🏕️ Scouting groups helped keep semaphore alive as a fun teamwork and communication skill for kids.
How do you send a message with semaphore flags?
What materials do I need to make semaphore flags?
What ages is semaphore flag messaging suitable for?
What safety tips should I follow when kids use semaphore flags?
