Get to know your Jurassic from your Cretaceous in this handy geologic time periods chart.

One of the most famous and easy to spot constellations is the Big Dipper! Formally known as Ursa Major, this constellation was named after a bear.

This nonfiction passage helps kids develop reading comprehension skills, as well as learn important ecological facts.

Constellations are not just named after animals, some of them are named after people! Learn about the constellation Sagittarius with this fun worksheet.

What happens to water after it rains? Learn about the stages of the water cycle in this colorful worksheet!

What is the Earth? Here is a reading passage and a word search to help your kid get acquainted with Earth science.

Can you match the scientist with the unit of electricity or power that is named after him?

Explore the applications of electrical energy with this helpful second-grade worksheet!

What happens to our food after we swallow it? Chomp on some body science with this diagram of the digestive system.

What makes a reptile different from an amphibian?  Learn all about animal classifications in this worksheet for second and third graders!

After he fills in the blanks, your student can hold on to this worksheet on hydrogen for reference when preparing for tests and quizzes on physical science.

Ancient mariners mistook the manatee for a mermaid! Your young biologist won't make the same mistake after learning about the manatee with this worksheet.

Students flex their physical science knowledge by classifying items as solids or liquids in this fourth grade states of matter worksheet.

Can your child name 10 animals that make their home in the mountains? After completing this worksheet, he'll know all about mountain habitats!

After your child fills in this review sheet on chemical and physical properties, it's a good idea to hold onto it for future test review!

Help your child learn about one of the most elementary elements, gold.

Discover different types of energy with this third- and fourth-grade science worksheet!

Use a seesaw to see what happens when opposing forces become balanced or unbalanced!

In this North American animal tracks worksheet, students hone their observation skills by matching tracks to animals.

Learn about the science behind one of nature's most awesome spectacles: monsoons.

Next time you head outside for a hike or a camping trip, bring along this checklist of animal tracks!

Dig into the past with this third-grade worksheet all about fossils!

Blast off into space with a fun planet printable. This one features Jupiter, the largest planet in our solar system.

Do you measure distance in inches or seconds? When do you use miles? Answer these and more with this third-grade worksheet about the customary system of measurement! 

Dr. McSquare needs help sorting out his lab reports. Can your child read each item, then label it with the correct scientific method step?

Read about one of Yellowstone National Park's coolest animals, the big horn sheep.

Discover some of the fascinating properties of gravity by studying one of Newton's famous laws, the Law of Gravitation.

Learn about Red River Hogs in this series of animals facts sheets and coloring pages in one.

Learn the ins and outs of one of the body's most important organs: the heart!

Determine which magnets have the strongest force in this third- and fourth-grade worksheet!