Have you ever wondered why giraffes have long necks or why lions have sharp teeth? Find the answers in this third- and fourth-grade worksheet about adaptations!

Study the night sky with this hands-on science worksheet for third and fourth graders!

Study ecosystem changes with this drought-focused worksheet for fourth and fifth graders!

Fourth and fifth graders will cut out and assemble a human skeleton from paper in this engaging life sciences printable.

The food chain is an important life science concept for fouth graders. This game makes it fun to learn!

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

Learn about some of the most common forms of energy with this helpful one-pager for third graders!

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

Explore magnetism with this colorful science worksheet for third and fourth graders!

Explore the strength of magnetic forces with this worksheet for third and fourth graders!

Review the terminology of collisions with this engaging crossword puzzle for fourth graders!

Help third and fourth graders become rock stars with this informative geology worksheet!

Learn all about essential laboratory equipment with this hands-on worksheet for fourth and fifth graders!

Take a peek into a temperate forest ecosystem with this food web worksheet for fourth and fifth graders!

Learn all about your body's most important muscle: your heart! This simple diagram is a great way to introduce your little biologist to his heart.

These STEM design challenge cards ask learners to build something new for a specific reason or purpose and are a great way to foster creative thinking.

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

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

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!

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.

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!

Introduce children to photosynthesis with this fill-in-the-blanks life sciences worksheet!

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

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

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.