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Starred Review on February 1, 2020 | Middle To High School
Gr 3–7—Brown continues his "Big Ideas That Changed the World" series with a look at machines through the ages. Ancient mathematician Muhammad ibn-Mu̅sa̅ al-Khwa̅rizmi̅ offers readers a primer on technology, from the abacus to 16th-century thinker Blaise Pascal's Pascaline ("a shoebox-sized gadget that used gears, wheels, axles, and dials to add numbers") to Ada Lovelace's analytical machine to the early ...Log In or Sign Up to Read More
