Ever wonder what the earth is made of? Practice reading and writing, and learn about the four layers of planet Earth.

Ever wonder what a shooting star is made of? With this colorful worksheet, learn about comets while practicing reading comprehension and handwriting.

Hey, did you hear that? Explore real-life examples of sound energy with this kindergarten and first-grade worksheet!

Learn more about how plants work with this cool celery experiment! Use this worksheet to help you record your observations after doing this experiment.

If a ship went down, would these items sink or float? Your little one will decide, with this fun worksheet to help him hone sorting and categorizing skills.

See if you can identify the objects that let light pass through them with this kindergarten and first-grade worksheet!

These two children sure look alike -- maybe because they're twins!

Did you know that having a pouch or a shell can help an animal meet its needs? Learn how animals use different parts of their body with this matching worksheet for kindergarteners and first graders!

Prepare for an exciting experiment with this cut-and-paste lab safety worksheet for first and second graders!

Print out a set of weather-themed postcards to give your child practice identifying seasons. These weather postcards also allow kids to practice writing skills.

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.

If you're taking a trip to the aquarium any time soon, be sure to print out this Aquarium Passport to bring along!

Did you know snowflakes are so unique, there are no two alike? Teach your child about how snow forms with this worksheet.

Match the sense to the picture in this five senses worksheet!

Got a little animal lover on your hands? Let him spend some time with his furry friends with this fun animal crossword puzzle.

The next time you're on a hike, be sure to take this leaf chart to guide you in identifying different types of leaves!

Add color to the silly sea horse who is busy protecting her two babies. Also, practice pronouncing the scientific name for a sea horse.

Growing up is an exciting time for your little one. Introduce this fun tracking chart so he can keep track of the teeth he loses!

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!

Decide what differentiates living vs non-living things! First cut out the items on page 1, and then sort them in the chart on page 2.

Find out what the scientific name for a walrus is in this under the sea coloring page then have fun coloring in the two wobbly walruses and their ocean home!

This Groundhog Day, find out more about the groundhog with this science sheet.

Introduce children to the food supply chain with this matching activity.

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.

This worksheet combines the five senses with the fun and interesting topic of weather predictions!

Help your child improve his handwriting skills with this printable worksheet, which is all about the four seasons.

Did you know people have been growing turnips well before Ancient Rome? Enjoy this coloring sheet with your little gardener.

Celebrate Moon Festival by tracking the shape of the moon over several days.

Looking for quiz questions to test your first grader's general knowledge? This printable will challenge your kid's overall knowledge.