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Decoder Glasses

Cool Science, Quick Crafts

overview

create secret codes with your besties and try to crack each other’s code!

30 minutes

maker checklist

  • tape + scissors
  • markers + paper
  • spy glasses template (included)
  • 2 pcs. red acetate (1.5 x 2 inches)

instructions

make your glasses

1

cut out our template, or use it as a guide to make your own.

2

cut along the solid lines, and fold on the dotted lines.

3

carefully cut out the rectangle spaces for the lenses.

4

tape a piece of red acetate over the cut out lens.

tip!

if you don’t have red acetate (gels) you can use a bit of plastic from a pasta box and color it with a red Sharpie.

write a secret message

5

test out your colors! make some marks on a piece of white paper, and lay the acetate on top of it to see which colors stay visible.

6

write the message in a few scattered letters across your page. use the color that *showed* through when you tested it out.

tip!

cool colors show through. warm colors hide.

6

conceal the message by filling in the rest of the paper with random letters in the colors that disappear!