This worksheet features Mercury, the smallest planet in our Solar System, and also the planet that's closest to the Sun.

Get to know your Jurassic from your Cretaceous in this handy geologic time periods chart.

Have you ever looked into the night sky and wondered where all those millions and million of stars come from? Find out here with a mini astronomy lesson!

Almost half of all known fish species call ponds, lakes, rivers, and other freshwater habitats home. Learn about freshwater fish in this worksheet.

Use this lightning diagram to go along with what your child is learning about weather systems in school!

This page is all about building your kid's natural resources vocabulary words, along with research skills.

Where do flower babies come from? Find the answers in this word search about plant reproduction!

How much do you know about our solar system's planets? Kids learn facts about Neptune in an out-of-this-world worksheet.

Ever lay on your back to look at the clouds? Now you'll know which types of cloud make up all those silly shapes you see with this diagram.

Rain or shine, get ready for some weather watching! Record data to observe the weather patterns over the course of a week.

Third grader today, astrophysicist tomorrow! Let your child research their planet of choice, and discover everything from the number of moons to temperature.

Looking for a fourth grade worksheet to help your kid with science? This printable will test his knowledge of the water cycle.

Understand nature's visual cues for the shifting of the seasons with this tree seasons match-up activity!

If we could look at the sun, what color would it be? Your child can decide with this sun coloring page, the perfect way to introduce her to astronomy!

Brrr, it's cold outside! In this worksheet, kids practice reading thermometers to figure out what the temperature is.

Does your child know where Earth is in the Solar System? He'll learn as he completes this fun, planet printable.

Here's a fun way for kids to review their knowledge of earth science terms. Challenge your child to give a definition of each word as he finds it.

Predict the weather with this fun-filled forecasting worksheet! Your child will review basic weather terms and practice her observation skills.

Get wise about wind! Even though you can't see it, wind is a powerful force caused by changing temperature in the air.

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

Can your little geologist identify the three main types of rock? Test his earth science savvy with a matching activity.

Create your very own constellation chart with this cut-out template, perfect for stargazing on a clear night!

How do the Sun and the Moon interact with the Earth, and how do all three depend on one another? Find out in this science worksheet.

Go cloud-gazing on a nice day, and use this fun cut-out chart to name the types of clouds you see!

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!