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In this activity, students use an interactive tool to simulate how scientists collected and used sample data to estimate elephant population sizes.

In this Click & Learn, students explore mathematical models that describe how populations change over time and apply these models to the invasive lionfish population in the Bahamas. They also use data from other species to learn how density-dependent factors limit population size.

This interactive simulation allows students to explore two classic mathematical models that describe how populations change over time: the exponential and logistic growth models.

This interactive module explores methods used to survey large animal populations, and what they have revealed about the current state of the African elephant population.

This interactive module traces the evolutionary history of birds by comparing the bone structures of a chicken to those of other species.

This interactive timeline explores the history of Gorongosa National Park in Mozambique.

This interactive module shows how DNA sequences can be used to infer evolutionary relationships among organisms and represent them as phylogenetic trees.

This interactive module allows students to compare the morphological characteristics of seashells and construct an evolutionary tree.

This playlist can be used to teach several core concepts of population dynamics and trophic cascades through three diverse ecological examples: wolves in Isle Royale, Michigan; rinderpest and wildebeest in Tanzania; and cougars in Zion National Park, Utah. It can be used in general biology and environmental high school courses.

This playlist can be used to teach several core concepts of natural selection and speciation by connecting students to actual research on Caribbean anoles. It can be used in AP/IB Biology and undergraduate college courses.

This playlist can be used to teach several core topics in evolution by exploring examples of lizard species evolution and the effects of mass extinctions on tetrapod evolution. It can be used in undergraduate biology courses.

This playlist can be used in an online, undergraduate (majors-level) introductory biology lab to incorporate core topics in evolution, diversity of life, and ecology.