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Citric Acid Cycle

This animation shows the reactions of the citric acid cycle, which splits off carbon atoms and generates energy-rich reduced forms of cofactor molecules. It is the first of three animations about cellular respiration.

ATP Synthesis

This animation shows how the proton gradient across the mitochondrial membrane powers the ATP synthase enzyme to make ATP. It is the third of three animations about cellular respiration.

Electron Transport Chain

This animation shows how the enzyme complexes of the electron transport chain harvest energy from cofactor molecules to pump protons across the mitochondrial membrane and establish a chemical gradient. It is the second of three animations about cellular respiration.

Interactive Exploration of Coral Bleaching

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.

Spiraling the Carbon Cycle Using BioInteractive

In order to develop complex scientific explanations, students need to have many opportunities to grapple with a concept. In this Educator Voices article, hear how Amy Fassler uses a sequence of resources in a process called “curriculum spiraling.”

Teaching Ecology and Animal Behavior in an Online Setting

Video activities can be easily translated into dynamic online learning activities. In this Educator Voices article, Melissa Haswell details a two-week series of video activities for an ecology and animal behavior unit that she's used in both in-person and online classes. 

Assessments and Reflections in Online Courses

Reflection questions that help students probe deeply into the material work well in both online and in-person courses. In this Educator Voices article, Tara Jo Holmberg outlines how she uses reflection questions in online courses with her community college students. 

 

Changing Assessments for Online Classes

Online courses may mean rethinking learning outcomes for your students. In this Educator Voices article, see how Phil Gibson is revising his learning outcomes and approach to assessments for his classes.