Decode — Red - Part 222:26 Min

Cut a piece of cardstock into the shape of a magnifying glass or a simple rectangle with a hollow center.

Place your red decoder lens over the paper. The red filter will make the red marker "disappear" into the background, while the blue or green text will appear dark (nearly black), making the secret message clearly visible. Alternative Method: Invisible Ink DECODE RED - Part 222:26 Min

Red cellophane paper or a transparent red plastic sheet. Scissors and Tape/Glue: To create the "decoder lens". Step-by-Step Instructions Prepare the Decoder Lens (5–10 Mins) Cut a piece of cardstock into the shape

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. Alternative Method: Invisible Ink Red cellophane paper or

One light blue (or green) marker and one bright red marker.

Use a to scribble, doodle, or write "decoy" words directly over your blue/green message.