Did you ever walk through a wall? Drink a glass of blocks? Have you ever played with a lemonade doll, or put on milk for socks? This latest addition to the Let"s-Read-and-Find-Out Science series introduces the youngest readers to an important science concept: the differences between solids, liquids, and gases. Any child who wants to know why he can"t walk through a wall will enjoy Kathleen Zoehfeld"s simple text and Paul Meisel"s playful illustrations.