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.
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.
It is rare for a single phenomenon to span a large range of concepts. In this Educator Voices article, professor Holly Basta explains how to utilize our sickle cell resources to teach a variety of topics including the central dogma, gene therapy, Mendelian genetics, and evolution
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.”
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.
The world has lost more than one quarter of its land-dwelling insects in the past 30 years, according to researchers whose big picture study of global bug decline paints a disturbing but more nuanced problem than earlier research.