Invaluable Elementary School Reference Clear explanations, lively pictures, and hundreds of useful examples take kids from basic counting through fractions. Everything kids need to know about elementary school math is here in this one inviting book. Young learners can move from simple estimations of amounts through essential number functions (addition and subtraction, multiplication and division) to measurement, time-telling, and graphing. All terms are explained with straightforward definitions and visual representations, helping both children and parents gain confidence as they talk about math together. This terrific book also includes links to carefully selected Web sites with online math puzzles, games, and resources designed to reinforce key points.