When your fourth grader is ready to move on to multiple-digit addition and subtraction, these riddles will make review fun and challenging.

Add to your math skills with the help of this varied workbook!

Learn to lasso numbers with an estimation round-up! Rounding and estimation are tools that can help kids add or subtract large sums quickly. And it's a skill that they can use in everyday activities.

This beautiful, colorful activity book offers a comprehensive overview of division basics and techniques. Add tools like skip-counting on a number line, repeated subtraction, fact families, arrays, and equal groups to your problem-solving arsenal. Be sure

This fraction workbook covers fraction equivalents, simplification, adding and subtracting and improper fractions.

Did you know that light can bend? Help your curious kids learn the important physical properties of light and explore how light adds colors to our world, with this beautiful series on light and color.