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Inside GPS

Y. LaPierre

Today, GPS satellites orbit the earth. They send signals to GPS receivers in cars, smartphones, computers, and drones. Inside GPS introduces your readers to the uses of GPS, the hardware and software that make GPS possible, and the future of GPS technology. Gr. 3-7

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Full-color & Historical Photos Further Reading Glossary 48 pages 7-1/4" x 9-1/4" ©19