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To create a "DECODE RED" activity—a popular project where a hidden message is revealed using a red filter—follow the steps below. This activity is designed to take roughly to complete. Materials Needed Paper: White construction paper or cardstock.
The goal is to cover the blue message enough that it is no longer readable to the naked eye. The red ink should look like a chaotic jumble of lines or shapes.
On a separate piece of white paper, write your secret message using a . Keep the letters clear and thin. Create the "Red Noise" Camouflage (10 Mins)
Cut a piece of cardstock into the shape of a magnifying glass or a simple rectangle with a hollow center.
