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Spies, ciphers, and drones

Burrows, Terry  Codes, Ciphers, and Cartography: Math Goes to War Gr. 4–6, middle school     48 pp.     Lerner Burrows, Terry  Robots, Drones, and Radar: Electronics Go to War Gr. 4–6, middle school     48 pp.     Lerner STEM on the Battlefield series. Each book in this series discusses how a field of STEM has been instrumental — from […]