Classroom Resources

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

This Click & Learn shows that keystone species exist across a variety of ecosystems and can exert their influence in different ways.

This interactive module allows students to examine fossils of early humans and compare them to modern primates.

This interactive module explores the biology of sex determination and development in humans, set against the backdrop of the different sex testing policies implemented throughout sports history.

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 how different animals — elephants, birds, and bats — have evolved distinct ways of using sound to communicate.

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 explores the environmental factors and species involved in five major mass extinctions.

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

This interactive module allows students to examine fossils of fish, tetrapods (four-limbed animals), and their transitional forms.

This interactive module explores different anatomical features of the human body and what they reveal about the evolutionary history of humans.

This interactive module allows students to explore concepts related to speciation by identifying which birds belong to one of two finch species.