About the Book: Day Light, Night Light: Where Light Comes from
Lets-Read-and-Find-Out Science books help satisfy a young childs curiosity
about the world books. Each book in the series introduces basic science concepts
and builds on them using a step-by-step method, based on theories about how
young children should learn best.Stage 1 books explain simple and easibly
observable science concepts to 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.