A chill is in the air and the leaves have all fallen from the trees, as an exuberant child runs “here and there, catching snowflakes in the air.” Having similarly explored all things autumn (It’s Fall, 2001) and all things spring (It’s Spring, p. 256), Glaser and Swan bring winter alive. Bundled in a scarf, hat, and mittens, walking through the snow can be fun, watching the prints that each footstep makes. Snow angels and snowmen cannot be far behind as the snow deepens. It is hard to believe the picture that arrives in the mail of the girl’s grandparents basking on a Florida beach, but winter is different everywhere. Even as some creatures are slipping through the whiteness to find food and shelter, many animals are burrowed deep in the ground or in the warm water beneath the lake’s icy crust. The descriptions of the natural world are enhanced by the use of multi-layered, hand-painted, cut-paper collages. Adding visual depth to each page, they invite readers to come in for a closer look. Suggestions for winter projects and activities follow the text. (Picture book. 4-8)