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.

Challenge your fourth grader with these spelling worksheets that include grade-specific words and word problems involving new vocabulary.

These vocabulary worksheets will introduce kids to the wide world of words and get them excited about learning new skills through reading.

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.

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!

Bring good tidings and cheer all winter with a winter break fun pack! Complete with a deck of playing cards, puzzles, drawing prompts and more, this mash up of brainteasers will keep boredom at bay.

United States symbols include songs, buildings, documents and people. This introduction to the Constitution and national treasures keeps learning fun and manageable for your young citizens.

This workbook enhances reading comprehension skills and spelling with a fun collection of word searches covering geology, food, animals and historical figures.

This abridged collection of classic Rudyard Kipling tales is paired with coloring pages and reading comprehension activities that will challenge and entertain your young reader.

Approach spelling from another angle with this brain teasers workbook. It touches on a mix of subjects from U.S. geography to a bit of science.

Your child will improve language arts skills while learning about life science in this workbook. It includes word searches, reading exercises, creative writing, spelling tests and other activities.

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.

A central component of reading comprehension is the ability to understand the main idea or theme of a text. In this series, your child will practice basic analysis of a short story or poem.