Launch into learning with this worksheet on Gemini 4, one of the original missions in the early days of the U.S.'s space program.

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

For kids learning geography or earth science, this is the perfect review sheet for drilling students on common geography terms and phrases.

Discover the animals and plants of the past in this fossil-focused worksheet!

Children discover and review the parts of a flower and what they do as they complete this botany-themed crossword puzzle.

Renewable energy is extremely important for the Earth's future! Test your child's knowledge of renewable resources with this review sheet.

A fun challenge for kids, this Earth Day crossword puzzle is a great way to review facts about the Earth and get a reminder on how to live green.

Here's a fun way to review photosynthesis with your child! She'll show off her science knowledge as she answers questions to complete the crossword puzzle.

Teach your child about plants with this worksheet, which helps your child practice botanical vocabulary.

Analyze everyday objects and identify states of matter with this second- and third-grade science worksheet!

Learn to read a standard thermometer in both Fahrenheit and Celsius in this informative second- and third-grade worksheet! 

What is geothermal energy? Find out how we use parts of the Earth to provide us with renewable energy!

In this North American animal tracks worksheet, students hone their observation skills by matching tracks to animals.

Children put their science vocabulary to the test with this engaging crossword puzzle!

Why do some desert animals have large ears? Why do others have scales? Learn the answers to these questions and more with this life science worksheet!

Encourage your little environmentalist to learn about composting! Children will boost their reading skills as they learn what compost is and how it helps the environment.

Children learn why the light from the sun seems white to us, why we see objects in color, and why the sky is blue in this beautiful and fascinating worksheet.

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

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

Look for natural resources around a farm in this engaging worksheet for second and third graders!

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

Unearth fossils in this explorative third-grade worksheet!

Analyze fossils with this engaging third-grade science worksheet!

Learn how seeds move with this second- and third-grade matching activity!

Children get to know a few geology terms in this landform word search puzzle.

Dive into habitat studies with this second- and third-grade worksheet!

Get a lesson in sports and science with this engaging third- and fourth-grade worksheet!

Take a science-filled trip to an amusement park in this third- and fourth-grade worksheet!