Assign this text to deeply engage your students!
Actively Learn provides free ELA, science, and social studies digital content—short stories, primary sources, textbook sections, science articles, novels, videos, and more—and embeds them with assignments aligned to standards for all 50 states that you can assign immediately or customize for your students.
Whether you’re looking for “The Tell-Tale Heart,” The Hate U Give, “The Gettysburg Address,” or current science articles and simulations, Actively Learn is the free go-to source to help you guide your students' growth in critical thinking all year.
The earliest vertebrates resembled hagfish and lived more than 500 million years ago. As other classes of fish appeared, they evolved traits such as a complete vertebral column, jaws, and a bony endoskeleton.