5-9 ┊ 5277 words ┊ ◄))
5-9, 5277 words, 48 minutes audio time.
From radio-equipped football helmets to GPS-tracked hockey pucks to basketball shoes with electronic sensors, this book explores the most interesting elements of sports technology. Lear the history of your favorite sports and see how games, rules, and play have developed as technology has improved!
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