CommonLit is a free collection of fiction and nonfiction for 3rd-12th grade classrooms. Search and filter our collection by lexile, grade, theme, genre, literary device, or common core standard.
Falling through Earth might be a long and fruitless trip
Emily Conover discusses the possibility of someone falling through the center of Earth.
Scientists confirm ‘greenhouse’ effect of human’s CO2
Thomas Sumner discusses a study on the effects of CO2 emissions.
What’s What with the Rostra?
Sarah Linn discusses the places for public speaking in Ancient Rome.
Baseball: From pitch to hits
Stephen Orne discusses the science behind throwing and hitting a baseball.
Take A Look at Roman Art
Julia Troche discusses sculptures of Augustus, the first emperor of Rome.
How did Greeks and Romans Write?
Angela Murock Hussein
Angela Murock Hussein discusses writing during ancient Greek and Roman times.
Athens vs. Rome
Chaddie Kruger discusses Athens’ and Rome’s shift to democracy.
The Golden Age of Athens
Collomia Charles describes the Golden Age of ancient Athens.
Going, Going, Gone!
Famous street artist Banksy made it so his painting destroyed itself at auction.
Explainer: Global warming and the greenhouse effect
Agnieszka Biskup explains the greenhouse effect and why the Earth is warming.
Down the Drain
Marshall Joseph Becker
Archeologists explore an area that would have been the center of downtown Rome 2,000 years ago.
'Couch potatoes' tend to be TV-energy hogs
Kathiann Kowalski discusses how heavy television watching wastes electricity and contributes to global warming.
Thai cave boys: the psychology of surviving underground
Sarita Robinson describes the 12 boys trapped in a cave in Thailand and what it takes to survive such an ordeal.
Mark Cartwright discusses the purpose of the gymnasium in ancient Greek life.
Raindrops break the speed limit
Stephen Ornes discusses the physics that affect how fast raindrops fall.
Why Paralympic sprinters have trouble with curves
Helen Thompson discusses a study about how physics affects the performance of sprinters with prosthetic legs.
Design Par Excellence
Lena Lambrinou discusses the temples constructed by the ancient Greeks.
Explainer: How scientists know Earth is warming
Sharon Oosthoek explains how scientists can document global warming by measuring the Earth’s temperature.
Your food choices affect Earth's climate
Janet Raloff discusses a study comparing the effects of different diets on global warming.