This Earth Day, learn about conservation and the environment while you enjoy solving a fun puzzle! 

During the Gold Rush, people weren't sure if they found gold or something else, and these easy steps would help them be sure.

These 12 dinosaur names are all mixed up, and need a dinosaur expert to help unscramble the letters.

If you're fascinated by bugs, check out this coloring page featuring the insect order Odonata, which consists of damselfies and dragonflies.

Try out this simple worksheet diagramming the anatomy of a shrimp. Big words, small sea creature.

Which animals can live happily alongside humans? With this word search, match up game, fun facts, your child will learn more about urban animal habitats.

Learn about the grizzly bears that live in Yellowstone National Park.

Learn the names of major joints in the human body, the points at which bones intersect to make your arms and legs bend.

Dreams can be delightful or downright terrifying. Discover the science behind dreams and try to figure out what your dreams say about you.

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

This is not your average coloring page. Using only the three primary colors, mix your paints together to form as many colors as possible.

Did you know that there are forests in the temperate ocean ecosystem? Learn all about the temperate ocean with this fun ecosystems sheet!

Ecosystems are an important part of fourth grade science. This fun printable will help your child with her knowledge of plants and animals.

The food chain is an important life science concept for fouth graders. This game makes it fun to learn!

Let your curious kid learn a little bit about how fireworks work in this summer science sheet.

Mix a little art into your science with this reading-slash-drawing sheet on hills and valleys.

Budding inventors can get a fun review of the simple machines with this word search.

Can you and your child come up with a few ways to conserve water in your home? This printable starts you off with five ways to conserve water.

Nature is all around us! But how much does your child know about our natural world? Test her knowledge with some nature fun-facts trivia.

A fun challenge for kids, this Earth Day crossword puzzle is a great way to review facts about the Earth and get a reminder on how to live green.

Test your third grader's biology knowledge with this worksheet, which challenges him to separate invertebrates from animals with a backbone.

Blast off deep into space with this science worksheet featuring the dwarf planet, Pluto.

This worksheet is all about the U.S. space mission of Friendship 7, and will help kids with reading comprehension and U.S. history knowledge all at once.

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

Looking for a way to brighten your child's enthusiasm for astronomy? Introduce him to the constellations with this worksheet about the constellation Capricorn.

We all know the famous equation E = MC^2. But what does it mean? Learn a bit more about Einstein's famous energy equation with this physical science worksheet.

The next time your parents ask you to wash your hands before dinner, read this worksheet about Joseph Lister and take their advice!