"Children in prekindergarten focus on counting and gradually master the essential one-to-one matching of an object to a number. By the end of second grade, they can represent one-, two-, and three-digit numbers, understand simple fractions, and apply a variety of facts and strategies to add and subtract skillfully. Investigations in this book support this progression by inviting students to count and order ducklings in a line, compute th ..."
"This book introduces young children to the basic ideas of comparing and ordering lengths, weights, time, and capacities. Engaging hands-on activities develop these ideas, along with the concept of units of measure and the use of measurement tools. The investigations follow children's natural progression from using many copies of a unit to iterating the unit to using a tool that iterates the unit. The supplemental CD-ROM features interac ..."
"The investigations for prekindergarten and kindergarten contained in this book engage students in such activities as creating story problems about teddy bears, examining patterns of fire trucks and firefighters' hats, and making glyphs to represent data about children in the class. Students apply mathematical ideas from the five main content areas number, algebra, geometry, measurement, and data analysis. As they work, they infer, gener ..."