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.

This packet of worksheets introduces children to food webs, an important life science concept.

Review the rock cycle with this second-, third-, and fourth-grade crossword puzzle!

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

Budding inventors can get a fun review of the simple machines with this word search.

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.

I spy with my little eye... six simple machines! Here's a fun way to help your child review the simple machines.

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! 

How many machines can you find around the house? You may find them where you least expect it!

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!

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

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

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!

Ponder the pedigree of plants with this worksheet about inherited traits for upper elementary students!