Did you know there are 6 simple machines that make up every complicated gizmo out there? This book introduces the pulley, the lever, the screw, the wedge, the inclined plane and the wheel & axle.

Leap and skip across the number line for addition and subtraction practice! Number line word problems help kids to easily visualize math equations, and multi-step problems make for an extra challenge.

Second graders practice telling time and reading the calendar, and test their skills with problems on elapsed time.

Work with 2-D shapes and famliiarize yourself with concepts like halves, thirds, and fourths in this hands-on geometry workbook. Children practice identying parts of a whole and develop a meaningful understanding of fractions through exercises, games, and