Did you know plants make their own food? Discover how with this fill-in-the-blank worksheet for third and fourth graders!

What makes a reptile different from an amphibian?  Learn all about animal classifications in this worksheet for second and third graders!

Discover how cover crops enrich soil and support healthy crop growth with this research-based worksheet for fourth and fifth graders!

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

Our ecosystems need a protector; is your third grader up to the challenge? Identify harmful pollutants in a science worksheet that doubles as a coloring page.

Is your fourth grader learning about electricity? This worksheet is all about circuits, tests her skills and reinforces the concept of how a circuit works!

Earth has many different land and water features—can you recognize them? Test your knowledge with this crossword puzzle for third and fourth graders!

Did you know the surface of the Earth is always changing? Learn about the events that change Earth's surface with this crossword puzzle for second and third graders!

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?

A handy worksheet that breaks down the properties of metal. A good physical science review sheet to keep around for reference.

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

Fly high with The Wright Brothers, two siblings who soared to the forefront of history with their design for the first modern airplane.

Learn all about the ooey-gooey areas of land called wetlands that provide a home for certain kinds of plants and animals.

Get to know the residents of the reef with this coral reef-themed crossword, perfect for expanding life science knowledge and working on vocabulary, too!

Get to know each of the Seven Summits, then organize their heights into a graph.

Guglielmo Marconi was a man who made waves in radio and sound. Learn about his life and work, then answer a short essay question in this science worksheet.

What is the Earth made of? Find out everything that goes on just below the surface in this science reading worksheet.

Expand your sea creature vocabulary with this Life in the Reef worksheet!

Learn about how the Earth was formed in this science worksheet that covers the early years of the Earth.

What does the Earth look like? Find out all about the nooks and crannies that cover the planet with this landforms worksheet.

Find out more about what REALLY dwells in swamp ecosystems with this worksheet all about swamps.

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.

Dive deep into your body's circulatory system with this worksheet on blood and what it's made of.

Learn more about the animals in the swamp food chain, and find out how each living thing in a swamp ecosystem needs another to survive.

Get to know some of the friendly, furry, feathery river wildlife that live near American rivers, then match each one to its home.

In which habitat could you find an arctic fox, a polar bear, and a snowy owl? Have your kid find tundra animals with this word search worksheet.

Do you know which animal has two humps? Your child will use clues to determine what animal name fits in the crossword puzzle with this worksheet.

This helpful worksheet lays out all the qualifications for planethood. A great way to start studying outer space science!

Did you know that invertebrates don't have backbones? Find out some different types of invertebrates with the clues in this crossword puzzle.

What has two legs and carries its baby in a pouch? Fill in this crossword puzzle and learn some fun facts about two-legged creatures!