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Laetoli Footprints

This activity explores an image of fossil footprints at Laetoli, which serves as a phenomenon for learning about fossil evidence and human evolution.

Evolution
Phenomenal Images
High School — General
High School — AP/IB
Evaluating Science in the News

In this activity, students evaluate a science news article to determine whether it is a trustworthy source of information.

Science Practices
Lessons
High School — General
High School — AP/IB
College
Tracking Global Changes in Forest Cover

This activity guides the analysis of a published scientific figure from a study that investigated annual global losses in forests over time.

Environmental Science
Science Practices
Data Points
High School — General
High School — AP/IB
College
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.

Biochemistry & Molecular Biology
Cell Biology
Animations
High School — AP/IB
College
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.

Biochemistry & Molecular Biology
Cell Biology
Animations
High School — AP/IB
College
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.

Biochemistry & Molecular Biology
Cell Biology
Animations
High School — AP/IB
College
Mystery of the Missing Tusks

This activity explores images of elephants with and without tusks, which serve as phenomena for learning about selection and human impacts on the frequency of traits within populations.

Evolution
Environmental Science
Phenomenal Images
High School — General
High School — AP/IB
Population Regulation in the Serengeti

In this activity, students learn about the factors that regulate the population sizes of wildebeest and buffalo in Serengeti National Park.

Ecology
Science Practices
Case Studies
High School — General
High School — AP/IB
College
Scientist Role Models

In this activity, students find a scientist with whom they can relate in some way and then explore and reflect upon the impact of that scientist’s work.

Science Practices
Lessons
High School — General
High School — AP/IB
College
Activity for Solving Crimes with the Necrobiome

This activity explores content presented in the animated video Solving Crimes with the Necrobiome, which describes the microbial changes associated with decomposing corpses.

Microbiology
Film Activities
High School — General
High School — AP/IB
College