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Ohio State University
Beyond Penguins and Polar Bears: The Forces That Change the Face of Earth
Learn how different types of Earth processes change Earth's surface.
CK-12 Foundation
Ck 12: Second Grade Science
This customizable digital textbook covers topics related to second-grade science. It is Next Generation Science Standards (NGSS) aligned.
CommonLit
Common Lit: Text Sets: Nature and Conservation
Learn about how the natural world interacts with itself and how people impact the planet with this science-based text collection of 46 Grade-Leveled texts (3-12) on the topic of Nature and Conservation. [Free account registration...
CK-12 Foundation
Ck 12: Earth Science for Middle School
This digital textbook covers core earth science concepts and includes interactive features, real-world examples, videos, and study guides.
Khan Academy
Khan Academy: Answers to Exploration Questions: Plate Tectonics
Explore answers about plate tectonics with this questions by Himalayan Mountains.
Khan Academy
Khan Academy: Mantle Convection and Plate Tectonics
Learn about the fundamental planetary process that has profoundly influenced the character and evolution of Earth, mantle convection.