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This activity explores images of tree growth in the Serengeti over time, which serve as a phenomenon for learning about and modeling species interactions in ecosystems.

This case study follows a 2020 COVID-19 outbreak on a cruise ship to highlight how control measures like lockdown impact disease spread.

In this activity, students identify the science practices and concepts in a Wild Hope episode.

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

This case study follows the 2019 measles epidemic in Samoa to highlight how vaccination impacts disease spread.

This interactive tool introduces students to building scientific models. Educators can use the tool to create assignments and, in some cases, automatically grade student models. 

This activity explores an image of a wildlife overpass crossing a major highway, which serves as a phenomenon for learning about habitat fragmentation and conservation.

This interactive module can be used to model infectious disease spread in a population. It includes background on the SIR model and two simulators for modeling disease spread on different scales. 

This Click & Learn traces the flow of energy from the Sun all the way to cells within organisms. The embedded questions and calculations guide students’ understanding of how energy is distributed through a variety of ecosystems.

This activity guides students through learning and using key scientific terms, culminating in the creation of a customizable diagram.
 

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

This activity provides three sets of cards that can be used to reflect on the nature and dimensions of science.