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.

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

Do you measure distance in inches or seconds? When do you use miles? Answer these and more with this third-grade worksheet about the customary system of measurement! 

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

This science worksheet tells all about James Watt, the man that powered the Industrial Revolution.

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

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

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.

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

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

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!