Did you know that the screw is actually one of the six simple machines? This handy machine helps to make work easier!

Children get to know the tracks of familiar farm animals in this drawing activity.

Children hone their observation skills by matching the tracks to their corresponding water animal in this worksheet.

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

Challenge your science student to record a shadow over the course of a day and make the connection between shadows and the time of day.

Kids will learn about fossils in this worksheet. Help your child learn about the scientific method by getting him to examine a fossilized dinosaur skeleton.

Use this fossils worksheet to help a child learn about life on earth. Your child will learn about evolution and extinction, and also form a hypothesis.

What does a seal eat? Kids choose the pictures that show what kind of food each animal likes to eat in this first grade life science worksheet.

Let's talk about trees! Help your child use Earth Day as an excuse to praise the woody perennials that hardly ever get the recognition they deserve.

Studying earth science? Learn about the different types of clouds with the series of cloud types.

Colorado's state bird is the Lark Bunting, and you can learn all about it with this coloring page.

The Alaska state bird is the Willow Ptarmigan, also known as the Willow Grouse. First graders can learn fun facts and add color to the picture of the bird!

Wind has its own unique properties that help shape the weather. Give your little scientist a heads up with these wind facts!

Find a definition of what "natural resources" are, and complete the natural resources word search. It's a good vocabulary warm-up!

Learn your clouds with this coloring series of cloud types that merges science with coloring fun.

If you're looking to color a chimpanzee, you won't find a coloring page better than this one. Learn some facts about these animals while you're at it.

Children work on pattern-spotting and observation skills as they determine which of these six type of creatures is a bird.

Pick up some facts about squids, including about the fascinating Giant Squid, and do a bit of writing on this reading comprehension worksheet.

Help your second grader understand the different types of weathering and how they can affect the earth.

This worksheet tests kids' understanding of basic heredity by asking them to match parent turtles with their offspring based on similar traits.

Meet the Carolina Wren, a small bird that lives in the deep south of the U.S. and as far south as Central America.

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

Dig up some earth science learning with this printable, and turn your next hike or beach excursion into a lesson in soil science!

Learn about Supersaurus, one of the largest dinosaurs ever recorded, with this fun fact dot to dot printable.

Ocean resources are an incredible part of how we live our lives; read and write about them with this worksheet.

Which of these animals are reptiles: turtle, cobra, or jellyfish? Your first grader will ponder this question and more, when it comes to this cute worksheet.

Jaguars eat deer? Wow. Alligators, too? Are you kidding? What don't they eat? There's way more to learn about these intriguing eaters in this cool worksheet.

Here are four examples of mineral resources for kids to think about, plus a short explanation of what a mineral resource is.

Do you know what's the largest parrot in Africa? It's the African grey parrot! Learn about this blabbering bird and give the image some color.

Just like all plants and animals, you go through different stages in life too! Help your child to see how he will change and grow throughout his life.