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National Geographic Secret Message Science Lab
EGP 550
EGP 840 -35% 
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Description
- Complete Secret Science Missions! Use secret messages, decoder wheels, and other spy science techniques to complete 5 top-secret spy science missions with the National Geographic Secret Message Science Lab!
- 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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EGP 550