National Geographic Secret Message Lab
National Geographic Secret Message Lab
Regular price
$24.99
Sale price
$24.99
Regular price
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Two Decoder Wheels – Kids will get 3 decoder wheel missions, deciphering messages with a prefilled decoder wheel and creating their own decoder wheel/secret code language.
Reveal a Secret Message – Using pH paper and a citric acid solution, kids will be able to reveal a secret message they’ve written with a colorless crayon.
Hide a Secret Message – Using pH paper and a sodium bicarbonate solution, kids will be able to hide the secret message they’ve written with a colorless crayon.
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