Why does the earth spin? How is a rainbow formed? Feed the flame of curiosity in your child, and find out the answers to some of those age-old questions about how the world works.

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!

This book is all about logic puzzles, challenging kids to crack codes and determine answers by process of elimination and by observing clues. It exercises skills like reading, planning and reasoning.

Expand children's problem-solving arsenal with this fundamentals of multiplication workbook.

This workbook offers a good range of multiplications activities to strengthen your third grader's math muscles.

Meet the characters from Education.com's Brainzy games. They're ready to help kids with reading and math fluency.

Scale math heights using this workbook that's based on real measurements of U.S. geography. Kids rely on charts and data provided to answer word problems.

Embark on a worldwide animal safari with this nature-lover's workbook! Learn about animal habitats, endangered species and more, all while honing reading comprehension skills.

Explore the role that symbols and codes have in helping us interact with one another. If it's about the art of communication you'll find it in here!

Reading and writing: You can't have one without the other! Get familiar with every facet of literature in this workbook. It's packed with literary analysis activities.

Kids can go on a daily writing adventure with a month's worth of prompts to keep writing skills sharp. Invent an animal, write a recipe, make three wishes, and more!

Explore Valentine's Day with this mix of puzzles, reading, recipes, printable valentines and more! With a balance of sweet and educational, this book makes the day perfectly palatable for 4th graders.

What's a metaphor? How do you haiku? Kids will hone reading and writing skills with this book, from a simple syllable counting exercise to inventing rhymes and tangling with the Jabberwocky!

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.

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.

Kids can write, graph and read their way through Valentine's Day with a sweet mix of history, writing and math! Kids will explore both the mythical and practical side of this day.

Everything a kid needs to read and write a biography. Learn about some inspirational Americans, try your hand at writing someone else's story, and consider what makes heroes so compelling.

Whether it's allowance or a dog-walking business, kids are often looking for ways to earn an extra buck. Tap into that interest with practice that includes calculating tips, sales tax and commission.

Nature documentaries might make the animal world seem graceful, but it's actually pretty gross! Explore all the icky, sticky and smelly things animals do to help each other survive in the wild.

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.

Here's an arsenal of April Fools' Day fodder! Kids will be armed with facts, pranks and puzzles. Plus, they'll be tickled by goofy writing prompts, silly word problems and wacky reading comprehension.

Roly’s Road Trip Summer Packet—designed with busy families in mind—includes 10 pages of fun, travel-friendly activities, offering a smart, screen-free way to make the most of your summer.

Roly’s Road Trip Summer Packet—designed with busy families in mind—includes 10 pages of fun, travel-friendly activities, offering a smart, screen-free way to make the most of your summer.

Roly’s Road Trip Summer Packet—designed with busy families in mind—includes 10 pages of fun, travel-friendly activities, offering a smart, screen-free way to make the most of your summer.

Roly’s Road Trip Summer Packet—designed with busy families in mind—includes 10 pages of fun, travel-friendly activities, offering a smart, screen-free way to make the most of your summer.

Roly’s Road Trip Summer Packet—designed with busy families in mind—includes 10 pages of fun, travel-friendly activities, offering a smart, screen-free way to make the most of your summer.

Roly’s Road Trip Summer Packet—designed with busy families in mind—includes 10 pages of fun, travel-friendly activities, offering a smart, screen-free way to make the most of your summer.

A biome is a community of plants and animals that occupies a distinct region. In this great introductory overview, we explore the vocabulary, flora, and fauna of the world's biomes: tundra, taiga, grasslands, deciduous forest, chaparral, desert, savan