National Geographic Secret Message Science Lab

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Complete 5 top-secret spy science missions with the National Geographic Secret Message Science Lab! Kids will decode messages, create their own secret codes, hide and reveal messages using science, and experiment with p H reactions. Easy-to-follow instructions make each mission fun and educational, teaching spy techniques and science concepts along the way. Complete 5 top-secret spy science missions using secret messages and decoder wheels Two decoder wheels: 1 prefilled for 3 missions and 1 blank for creating secret codes Reveal secret messages using p H paper and a citric acid solution Hide secret messages using p H paper and a sodium bicarbonate solution Hands-on learning of spy science techniques and chemistry concepts Kit Includes: 2 Decoder Wheels (1 Prefilled / 1 Blank), 1 Spy Badge, 1 Pair of Goggles, 1 Colorless Crayon, Sodium Bicarbonate (0. 56 oz / 16 g), Citric Acid (0. 70 oz / 20 g), 4 Pieces of p H Paper, 2 Sponges, 1 Spray Bottle, Instructions and Learning Guide Unisex product Recommended Age: 8 years and above

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