Mastering the multiplication tables is a big step for kids! Help your student nail down his times tables with this round-up of helpful strategies, cool shortcuts and practice pages.

When Olympic swimmer Michael Phelps won a race by .01 of a second, we saw how significant a hundredth of a second can be! This series offers practice with decimals to build a solid understanding of the place value system.

Your child may be able to read a clock, but what about the passage of time? This workbook is all about elapsed time, and how to both estimate and calculate how much time has passed in between hours.

This workbook gives first graders lots of practice with subtraction and shows its relationship to addition.