Encyclopedia articles for beginners in math concepts. Explore -> Science and mathematics -> Mathematics. Note the links at the bottom of the articles to more detailed articles in World Book Student.
Encyclopedia articles for those working with Grades 5-7 math concepts. "Find it by..." -> "Subject" -> "Science and mathematics" -> "Mathematics". Note the green sidebar link "World Book articles on mathematical topics."
Created by the National Council of Teachers of Mathematics, this site helps families enjoy math outside school through a series of fun and engaging challenges.