Printable secret-agent math mission
Hide the Transmissions. They Crack the Code.
Age-matched puzzles, one shared decoder, one secret location to reveal.
Printable · Screen-free · Ages 3–12 · No signup required to begin
2 full missions free — Treasure Hunt, Crack the Code, or a mix. No signup. Enter your email to unlock a 3rd.
How a Crack the Code mission works
1. Hide the transmissions
You print a set of numbered strips and hide them around the house. Finding them is half the game.
2. Each strip is an age-level puzzle
The problems are matched to the agent solving them, so different ages can work the same mission.
3. Answers decode letters
Each correct answer maps a number to a letter on the shared decoder page.
4. The secret location appears
Letter by letter the message resolves into a real place in your home — where you hid the payoff.
Same mission. Different agents.
One shared secret message and one shared decoder page — but each child's transmissions carry math built for their own level. Here are three real transmissions from a single mission for ages 5, 8 and 10.
What you actually do
- Type the ages and hit create.
- Print the transmissions and the decoder page.
- Cut the strips apart and hide them.
- Hand over the decoder page and let the agents work.
Questions parents ask
- What ages is it for?
- Ages 3–12. The math on each transmission is matched to the child solving it, from simple addition up to multi-step problems.
- Can siblings of different ages play together?
- Yes. Everyone works the same secret message on one decoder page, but each agent's puzzles are their own level.
- Do I need an account?
- Start free. No signup required to begin — create and print first, decide later.
- What is the secret message?
- You pick the flavor; the mission decodes to a real hiding place (or a joke) that you set up before play.
Hide the Transmissions. They Crack the Code.
Age-matched puzzles, one shared decoder, one secret location to reveal.
Printable · Screen-free · Ages 3–12 · No signup required to begin