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.

Teaching Fish evolution and ecology

Fish evolution and ecology

The evolution of fish from hagfish to finned fish is a long and involved process. In the early evolution of fish, there was a switch to using gills to absorb oxygen instead of to filter food.

CK-12 (High School)

ESSENTIAL QUESTION:

How did the first hagfish evolve into the multitude of fish species present today?
STANDARDS:
RST.1 - Analysis & Evidence, RST.2 - Main Ideas

DEPTH OF KNOWLEDGE (DOK) LEVELS:

2,3
Assign this text to your students for free!