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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.
This is an interactive simulation that explores how changing the number of neutrons in an atom changes its mass number. Modeling in the simulation helps students visualize the meaning of isotopes and mass number.