Meet Charles Darwin, the man responsible for the theory of evolution and many other revolutionary scientific discoveries.

Children learn to use the "Somebody Wanted But So Then" method to write a short summary in this literacy worksheet.

Learn about Carl Sagan, an American astronomer, cosmologist, astrophysicist, astrobiologist, and author.

Discover the science experiment that tested whether humans could survive in an isolated ecosystem in this fascinating passage!

Make sense of the microorganisms and microbiome in your body!

Read all about the origins of Oregon’s fascinating Wizard Island in this engaging passage!

Discover the creatures that light up the dark night and the depths of the oceans!

Explore a remarkable example of Maya engineering with this sixth through eighth grade nonfiction reading worksheet.

Trace the steps behind a natural phenomenon with this third- through fifth-grade cause-and-effect reading worksheet!