Time To--

Remember that buoyant feeling of triumph when you first grasped the concept of time? Photographer McMillan obviously does, and his new book is designed to give a boost to any child still puzzling over it. In each pair of bright full-color photos, a clock on the left-hand page shows the hour with, on the right, a corresponding activity from a child's daily routine (breakfast, school, brushing teeth, etc.). A digital display (on the bottom left corner of the left-hand page) introduces the idea of a.m. and p.m. as well. McMillan's carefully planned layouts and fresh, appealing images are a model of clarity, but it's his attention to detail (matching the gradual changes in shading and accessories on the left-hand pages to the shifting movement of the sun) that makes this such a splendid book. Interesting background on the photographer's materials and methods is included at the end. Ages 3-7. (Aug.)