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In this phenomenon-driven activity, students investigate how cells are signaled to make melanin and explain how mutations in melanin pathway proteins affect the coat color of various organisms.

In this activity, wildfires and how much area they burn serve as a phenomenon to guide student inquiry, which includes evaluating data and developing scientific claims.

This activity explores images of a coral bleaching event, which serve as phenomena for learning about marine ecosystems, human impacts, and climate change.

This interactive module introduces the anatomy of the immune system and walks through the timeline of a typical immune response.

The added information provided at pause points within the animation Coral Bleaching allows for a richer exploration of coral reefs, symbiosis, and other topics in biology.

This interactive module allows students and educators to build models that explain how the Earth system works. The Click & Learn can be used to show how Earth is affected by human activities and natural phenomena.

This activity guides the analysis of a published scientific figure from a study that investigated how salt affects the electron transport chain.

This activity explores images of the bobtail squid, which serve as phenomena for learning about symbiosis and interspecies interactions.

In this hands-on activity, students simulate the effects of decreasing pH caused by rising levels of atmospheric carbon dioxide.

This activity analyzes a figure showing the atmospheric carbon dioxide concentration from 1958 to 2023.

This activity analyzes a published scientific figure from a study that tested whether corals can become more resistant to bleaching.

This activity allows students to use authentic scientific data to make claims about the threat of coral bleaching for reefs around the world.