Look first at one photo, then at the other: they're almost the same, but not quite. Children may have to search carefully to find the subtle differences between each image, but they-and their parents-will instantly realize what sets this collection of 100 puzzles apart from others. Each puzzle is a beautifully composed color photograph, rich in detail, and they're all arranged in categories such as seasons, animals, travel, and holidays. The appealing pictures include flame colored trees in fall, a lioness and her cubs, and bridges, boats, and buses. Kids will love exploring each image, hone their powers of observation, and enjoy the feeling of pride when they spy all the changes.