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Modeling Animal Survey Methods

This hands-on activity accompanies the video The Great Elephant Census. Students use beans or lentils to model sample and total count methods for studying wildlife population sizes.

Labs & Demos

Ocean Acidification

In this hands-on activity, students simulate the effects of decreasing pH caused by rising levels of atmospheric carbon dioxide.

Environmental Science
Science Practices
Labs & Demos
High School — General
High School — AP/IB

Beaks As Tools: Selective Advantage in Changing Environments

In this activity, students collect and analyze data from a hands-on model to discover why even slight variations in beak size can impact a bird’s ability to obtain food and survive.

Evolution
Science Practices
Labs & Demos
High School — General
High School — AP/IB

Milk: How Sweet Is It?

In this activity, students simulate a lactose tolerance test, similar to the one shown in the short film The Making of the Fittest: Got Lactase? The Co-evolution of Genes and Culture, to determine which samples contain the lactase enzyme.

Biochemistry & Molecular Biology
Anatomy & Physiology
Science Practices
Labs & Demos
High School — General
High School — AP/IB

Variations in the Clam Species Clamys sweetus

This activity engages students in learning about the mechanism of natural selection using candies to represent individuals of a species of clam.

Evolution
Science Practices
Labs & Demos
High School — General