Ticktock Banneker's Clock by Shana Keller (Author), David C. Gardner (Illustrator)

Throughout his life, Benjamin Banneker was known and admired for his work in science, mathematics, and astronomy, just to name a few pursuits. But even when he was born in Maryland in 1731, he was already an extraordinary person for that time period. He was born free at a time in America when most African Americans were slaves. Though he only briefly attended school and was largely self-taught, at a young age Benjamin displayed a keen aptitude for mathematics and science. Inspired by a pocket watch he had seen, at the age of 22 he built a strike clock based on his own drawings and using a pocket-knife. This picture book biography focuses on one episode in a remarkable life.