Let's-Read-and-Find-Out Science books help satisfy a young child's curiosity about how the world works. Each book in the series introduces basic science concepts and builds on them using a step-by-step method, based on theories of how young children learn best. The series has been around for a long time—we often get old hardcovers from the '60's—but the newer ones are more attractive to the modern child.
The newer versions of the books come in two stages:
Stage 1 books explain simple and easily observable science concepts for preschool- and kindergarten-age children.
Stage 2 books explore more challenging concepts for children in the primary grades and include hands-on activities that children can do themselves.