Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

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

Did you know there are clouds in space? They are very different than the ones on Earth! Read a bit about nebula in this space science worksheet.

Dig in to the layers of the earth with this science coloring page!

If your student is stuck on Celsius, hand him this multiplication and division practice sheet.

Discover some fun facts about the sun — and bring it to life with color — with this astronomy worksheet!

What's the difference between renewable and non-renewable energy? Help your student discover the various forms of energy we use each day.

A fill-in-the-blank exercise on tornadoes, made for fifth grade science students.

Teach your kids all about the second planet from the Sun with this simple science sheet.

Where to flower babies come from? Use this word search to learn about the different pollinators in our environment, and how they help spread plant seeds.

Without rain, we wouldn't have any puddles to splash and stomp in. Does your third grader know why and how rain falls from the clouds?

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

Practice geology vocabulary with this challenging crossword puzzle.

How was our solar system created? Read a bit about one of the most well-known theories in this worksheet about the Big Bang.

Teach your child how to respect the ecosystem with a science worksheet that doubles as a coloring page. Can they identify the sources of pollution in the scene?

Aspiring astronomers, get ready for a stellar coloring page all about the moon! Your child can read some fun facts as he colors.

There are lots of stories around the world for the rabbit moon: a rabbit image seen in the shadows on the moon's face. Here's one for young moon-gazers!

This thermometer worksheet gives your child practice reading and using a thermometer. Try this thermometer and temperature worksheet with your child.

This worksheet is a quick-reference tool of space vocabulary for kids, with an exercise to use the words properly in provided sentences.

How well does your child know the layout of our Solar System? This worksheet focuses on the biggest planet, Jupiter.

What's in the ground beneath our feet? Explore the science of soil with your child using this handy printable!

Turn a patchy day into a fun science adventure with this cloud gazing worksheet! Draw the clouds you spot, and then identify which type they are.

Learn all about wildfires, a natural phenomenon looked upon with awe and caution.

Tree climbers and tree huggers alike, learn the basics of reading tree rings to find out about the life of a tree.