"This STEM/STEAM picture book tells the story of Edith Clarke, the innovator who solved an electrical mystery and built the first graphing calculator--from paper, an accomplishment that helped her become of the first woman electrical engineer in America"-- Provided by publisher. Edith Clarke devoured numbers, puzzles, and brainteasers. She was an innovator who dreams of how mathematics could modernize America. Fascinated by electricity, Clarke solved...