3rd and 4th Grade Science Worksheets : Page 3

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

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.

Budding biologists can learn all about human digestion with this information page, complete with a diagram of the digestive system.

Science can be a bit of a bore to some students, but with this quick worksheet on chemical and physical reactions, it can at least be a breeze.

How much do you know about our home planet? Boost your Earth knowledge with this science printable.

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.

What happens to our food after we swallow it? Chomp on some body science with this diagram of the digestive system.

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!

Collecting data is an important part of math and statistics. Practice gathering data using items around the house or classroom!

In which habitat could you find a blue whale, a squid, and a shark? The ocean, obviously! Have your kid find ocean animals with this word search worksheet.

Learners will discover what heat waves are, and how they are connected to global warming, in this two-page earth sciences worksheet.

Roses are red, violets are blue, I know the parts of a flower, how about you? Learn about flower anatomy with this worksheet.

Learn to identify and name the parts of a seed in this two-page science worksheet and quiz!

Learn the difference between behavioral and physical adaptations with this cut-and-paste worksheet for second and third graders!

What is the rocky cycle? This info sheet answers that question with the help of a colorful diagram and a shout out to important vocabulary.

Budding scientists will learn about the density of salt water and perform an experiment with food coloring, salt water, and fresh water.

Do you know why Mars is called the Red Planet? Find out that and more on this planet printable.

Here's an introduction to different types of rocks.

Test your knowledge of prehistoric animals with this life sciences crossword puzzle!

Looking for a way to teach your kids all about the planets? This worksheet is the way to go. It features Venus, the second planet from the sun.

Never heard of the planet Pirjute? That's because it's Jupiter, with mixed-up letters! Kids unscramble planet names on this third grade science worksheet.

Here's a great worksheet for teaching your kids all about the planet Mercury. Did you know that it's the smallest planet in our solar system?

Give your budding chemist the facts and practice she needs for measuring with graduated cylinders.

Are students studying electricity? Give them a break from the scientific nitty-gritty with this fun word search full of electricity terms!

There are some parts of our brains that are still too complicated for scientists to understand! Find out the basics of the brain's functions with this fun page.

Did you know that ocean water is salty, but river water is not? Find out how fresh and salt water mix together in this water cycle worksheet.

Together, water and photosynthesis are the source of all life on Earth! Little curious minds will enjoy discovering the ins and outs of photosynthesis.

Learn about the many different biomes the Earth is home to in this life science worksheet, which holds the answers to some simple life science questions.

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

Discover the science behind an ages-old 4th of July tradition with this firework diagram.