Give the subject of energy a zap! This workbook offers a brief overview of energy, its sources and uses. With clear vocabulary and illustrations, it's a great introduction to what fuels us.

Number sentences make more sense when picking apart fact families and putting them back together! This colorful workbook helps kids make connections between addition and subtraction.

In this arrays 101 workbook, we explore and practice concepts like multiplication, repeated addition, factors, and products — all using arrays!

Make addition delicious! Kids will practice adding single-digit numbers with the help of some worksheets that are all about food.

From irregular measurements to using a ruler this workbook exposes kids to math vocabulary all about guessing and measuring lengths and sizes of objects.

Learn about presidents Washington, Lincoln and Obama. Reading quizzes, writing in academic formats, color-by-numbers, history timelines and designing monuments: This workbook has it all!

This workbook is all about helping first graders ace their money math. Counting coins, word problems, and coin matching will help familiarize kids with the basics of money.

Suffixes, verb tenses and plural nouns boil down to simple spelling patterns in this workbook. Kids will handle S, -es, -ing and -ed. It's all in the endings!

Fractions and decimals are way more fun when you apply them to real life scenarios, like parties, food and pets! This workbook teaches kids all about splitting up numbers.

Count on this vocabulary-focused resource as the go-to workbook all about natural resources! Write, research and get a breakdown of the world around by the natural resources we need and use.

Celebrate the Summer Olympics with this activity book. Learn some history, get to know Olympic athletes and ready yourself with all the tools you need to host your very own backyard games!

Learn the lay of the land with a comprehensive breakdown of Earth's landforms. From buttes to fjords, kids will learn all the terminology and science behind the amazing structures of our planet.