Even colors have best friends. In the world of color, these best friend pairings are called complimentary colors.

Did you know that invertebrates don't have backbones? Find out some different types of invertebrates with the clues in this crossword puzzle.

Get to know each of the Seven Summits, then organize their heights into a graph.

Is your child crazy about snakes? Introduce him to the rosy boa with this fun and informative quiz.

Learn some new words and facts about precious minerals with this word-scramble and matching worksheet.

Experiment with renewable energy from the comfort of home by creating a pizza box solar oven!

These worksheets help kids understand food webs, an important part of the life science curriculum in fourth grade.

This coloring page doubles as an info sheet, all about the burrowing owl! Your child will get to draw his own owl using the grid helper.

Encourage your child to take a nature walk, using the prompts on this worksheet to write and draw their observations of plants, animals, sounds, and more.

Little gardeners, get to know your plants! See the cycle of a plant from its birth to adulthood, and read a bit about photosynthesis too.

Searching for a worksheet that will give your kid help with his science skills? This printable will challenge his knowledge of the metric system.

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

Students flex their physical science knowledge by classifying items as solids or liquids in this fourth grade states of matter worksheet.

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.

What makes a reptile different from an amphibian?  Learn all about animal classifications in this worksheet for second and third graders!

Identify the appearance of the moon during its three main phases which include the New Moon, Quarter Moon, and Full Moon.

The animal names on this third grade science and spelling worksheet are all mixed up! Kids unscramble reptile and bird names to complete the worksheet.

Search for natural resources at the beach in this engaging worksheet for second and third graders!

Try to find natural resources in this camping-themed worksheet for second and third graders!

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

Discover the phases of the moon with this third- and fourth-grade space science worksheet!

What is the purpose of a hard shell or a long neck? Discover different adaptations with this matching worksheet for second and third graders!

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

Are chickens mammals, fish, or birds? Sort animals by their traits in this informative life science worksheet!

Dive into a coral reef habitat with this second- and third-grade worksheet!

Explore the lush plant life of the tropical rainforest in this second- and third-grade worksheet!