Counting on Katherine : how Katherine Johnson saved Apollo 13
by Becker, Helaine (Author)
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Summary
"You've likely heard of the historic Apollo 13 [mission]. But do you know about the mathematical genius who made sure that Apollo 13 returned safely home? As a child, Katherine Johnson loved to count. She counted the steps on the road, the number of dishes and spoons she washed in the kitchen sink,... Full description
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