Book excerpt: Learn about different ways to measure time by following the growth of a baby chimp Late one night, a tiny chimpanzee is born at a zoo in Kansas. He seems very weak, and the staff is worried. Will he survive? When the mother shows no interest in her baby, a pediatrician comes in to care for the little chimp. The baby grows strong and healthy, and soon he is big enough to be moved to the Denver Zoo. He is named Jiggs after the doctor who saved him. Jiggs is a lot like human babies. He wears diapers. He plays with his toys. He loves his pets. And he learns all kinds of new skills as he gets older. Follow Jiggs as he grows from a wobbly infant to a wild and wonderful toddler. Along the way you can learn about clocks, calendars, time lines, and other ways of keeping time records, in Chimp Math, from Ann Whitehead Nagda and Cindy Bickel, the authors of Tiger Math and Polar Bear Math.