How cool are chromosomes? Read what Steve the savvy scientist has to say about chromosomes and genes before testing your knowledge with some fill-in-the-blanks.

Sit down for a fun science lesson with Steve the savvy scientist as he teaches you all about dominant and recessive genes!

How fast does sound travel? Help your child figure out the physics of sound waves with this informative worksheet.

Ever wonder why sounds change as they move away from us? Learn all about the Doppler effect with this physics worksheet.

Did you know that sound is actually caused by movement? Vibrations of particles create the sound that we hear.

Get charged up about static electricity with this informative fourth- and fifth-grade worksheet!

Children are introduced to the concept of the speed of light in this illustrated worksheet.

Learn how energy changes forms with this fourth- and fifth-grade physical science worksheet!

Discover Earth’s different spheres with this fourth- and fifth-grade earth science activity!

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

Discover how water flows in this informative environmental science worksheet!

Learn how conductors and insulators affect the flow of electricity in this helpful fourth- and fifth-grade worksheet!

Kids learn about the Earth's solid and atmospheric layers, then label the diagram with the correct terms in this fifth grade Earth science worksheet.

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

Discover the connections between the sun, plants, and animals in this fifth-grade worksheet all about photosynthesis!

We all know the famous equation E = MC^2. But what does it mean? Learn a bit more about Einstein's famous energy equation with this physical science worksheet.

Learn about some of the major U.S. watersheds in this fascinating science and geography worksheet!

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

Discover some of the fascinating properties of gravity by studying one of Newton's famous laws, the Law of Gravitation.

Ever wonder what causes lightning to strike? Explore the physics of lightning with this striking physical science worksheet!

What happens to water after it rains? Learn about the stages of the water cycle in this colorful worksheet!

Warm up your scientific thinking with this colorful worksheet!

It's a bird! It's a plane! It's Physics Man! Test your knowledge of the physical world with this fun questionnaire that takes physics to a super-heroic level.

What is the difference between condensation and evaporation? Learn about natural cooling and heating processes that are caused by changing states of matter!

Do you know the functions of the primary organs in the human body? Put your knowledge to the test with this fourth- and fifth-grade crossword!

Ever wonder about how to make the perfect paper airplane? Learn about the four forces that affect flight with paper airplane physics!

Dr. McSquare needs help sorting out his lab reports. Can your child read each item, then label it with the correct scientific method step?

Is your child baffled by the scientific method? Dr. McSquare is here to help! Learn the steps by helping the doctor organize his lab reports.

Dr. McSquare is here to help kids learn the scientific method. His reports are all in disarray--can your child sort label each part with the correct step?

If you push your little brother, does he push back? Well, according to Newton's third law of motion, he does!