This activity explores an image of tattoo ink particles inside cells, which serves as a phenomenon for learning about the structure and color of human skin.

This activity explores images of planarians regenerating missing body parts, which serve as phenomena for learning about cell division and differentiation.

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 plant cells and structures, which serve as phenomena for learning about how plants respond to stimuli.

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 2016.

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.

This activity explores an image of early embryonic cells, which serves as a phenomenon for learning about cell division and development.

In this talk, biologist Anthony Barnosky discusses Earth’s five mass extinctions and whether current species declines may be part of a sixth mass extinction.

In this talk, marine biologist Stephen Palumbi discusses how coral reefs are threatened by climate change and how to protect them.

This activity allows students to calculate their carbon footprint using an online calculator.