With this diagram, kids can find out more about oil, one of our most widely-used natural resources, and learn a little more about where it comes from.

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! 

Our silkworm facts help your little one understand more about these special invertebrates. He'll read about their life stages and answer some questions.

Fact: This worksheet is about unusual animals from all over the world. Opinion: This is the best fact and opinion worksheet ever!

Help your child learn about facts and opinions in this animal-themed worksheet! Students will read sentences and decide whether they express facts or opinions.

Help your child learn about facts and opinions. Kids will read statements about animals before determining whether each statement is a fact or opinion.

Is a feather liquid, soft, spotted, or heavy? Practice describing everyday objects, or matter, with this second-grade science worksheet!

Learn all about the cumulonimbus cloud, more commonly known by a much more fearsome name: the thundercloud!

What do juice, water, and tea have in common? Compare and contrast matter in this engaging second-grade worksheet!

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

Learn about the texture and hardness of different objects in this second-grade worksheet!

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

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

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

Gear up to go into the science lab with the help of this activity!

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

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

Learn more about a tide pool habitat with this life science worksheet for second and third graders!

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

Do you know why Mars is called the Red Planet? Find out that and more on this planet printable.

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

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

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

Learn more about the animals in the swamp food chain, and find out how each living thing in a swamp ecosystem needs another to survive.

These clever birds harden and disguise themselves as tree branches when threatened. Learn more and do some coloring with this worksheet.

Scorpio, the scorpion, is one of the zodiac signs but you can also find him up in the stars at night!

Did you know that 763 Earths could fit inside Saturn? Learn more fun facts about Saturn on this fun science printable.

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

These "Dig It!" worksheets not only teach about life on earth, they teach the scientific method as well.

Whoa, this spider is quite the spinster! He is actually one of many brand new species discovered between 2009 and 2011.