The horned lizard has a scary exterior but a gentle personality. Your little student can learn about this North American lizard with this worksheet.

How do you think our universe will end? With this worksheet, explore some of the common theories, and then come up with some of your own!

Crocodiles, snakes, and toads fill the page on this cute crossword printable. Can your child figure out each animal's name and write them in the puzzle?

Learn all about the liver with this anatomy sheet. Our liver is one of many organs in the digestive system expelling waste from the body.

Sometimes measuring liquids scientifically is tricky. Give your budding scientist some practice, by reading measurements on graduated cylinder illustrations.

Are you aware of how many endangered species there are in the world? Use this trivia sheet to test your knowledge of some beautiful but endangered animals.

Searching for a worksheet to help your fourth grader with science? This printable will help him practice astronomy vocabulary.

Shape up your knowledge of living things with this plant sorting soirÃe! Your kid will build observational skills by describing the attributes of each plant.

What is solar energy? Discover how we use the power of the sun, and complete this worksheet about an important renewable energy source.

Blue whale facts include that calves weigh up to three tons at birth and adults can be as heavy as 200 tons. Get other cool blue whale facts on this worksheet.

Invite spellers on an inter-stellar adventure with this fun word scramble puzzle.

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

These math cards are printable quiz cards to challenge your first grader's overall knowledge.

Here's a stormy science adventure that will blow your socks off! Learn about tracking hurricanes with this map of coordinates.

Plants are living things just like you and me! But how do plants travel? Learn all about seed dispersal with this fun sheet.

Think toads and frogs are the same? Think again! Check out this breakdown of the differences between the two, complete with a quiz to check your new knowledge.

Practice using the periodic table to calculate the number of neutrons in the atom of an element.

Crank out a better understanding of simple machines with this worksheet all about the wheel and axle!

Give your student a great Earth Science study tool, complete with a list of fun facts and a word search all about the grasslands.

Get in tune with nature, and read a bit about an endangered species of animal, the Black-footed Ferret. Your child can color an illustration as he reads.

What is the difference between condensation and evaporation? Learn about natural cooling and heating processes that are caused by changing states of matter!

Get to know the planets of our solar system with a stellar coloring page filled with fun facts about Uranus!

Kids find desert animals in this science word search. Animal habitat worksheets help students learn about life forms in different environments.

Next time you're outside, go on a treasure hunt with this activity from PBS KIDS' Dinsosaur Train. Then, write all about your nature treasure loot!

This coloring page pays tribute to the roadrunner, the official New Mexico state bird.

Did you see the announcement in 2016 about new elements added to the periodic table? Put these new periodic elements flashcards in your study toolkit.

Help your child understand pollination with this informative worksheet, complete with a diagram.

Just like people, animals have babies that grow up into adults. On this worksheet, Kids draw a line to match each baby with its adult version.

This Louis Pasteur biography goes over his accomplishments, and includes a bacteria-based science activity at the end!

Animal lovers, get acquainted with a very unique species, the okapi! Read this info-sheet to learn about why this animal is endangered.