Tài liệu được phân phối tuân theo Giấy phép CC BY. Xem chi tiết tại https://creativecommons.org/use-remix/cc-licenses/

Students use this simulation to explore the relationship between the speed, mass, and distance of two objects in space and the resulting gravitational forces between those objects as well as the related paths of motion. The material is distributed in accordance with the CC BY. See details at: https://creativecommons.org/share-your-work/cclicenses

In this simulation, students explore an interactive model of the size and scale of cells compared with other objects, molecules, and atoms. The material is distributed in accordance with the CC BY. See details at: https://creativecommons.org/share-your-work/cclicenses

Animation of precipitation rates from 4/1/2014 through 9/30/2014. The material is distributed in accordance with the CC BY. See details at: https://creativecommons.org/share-your-work/cclicenses

The material is distributed in accordance with the CC BY. See details at: https://creativecommons.org/share-your-work/cclicenses

Tài liệu được phân phối tuân theo Giấy phép CC BY. Xem chi tiết tại https://creativecommons.org/use-remix/cc-licenses/

Tài liệu được phân phối tuân theo Giấy phép CC BY. Xem chi tiết tại https://creativecommons.org/use-remix/cc-licenses/

Tài liệu được phân phối tuân theo Giấy phép CC BY. Xem chi tiết tại https://creativecommons.org/use-remix/cc-licenses/

This simulation is included in an alternate activity callout to support students in thinking about the enhanced greenhouse effect. The material is distributed in accordance with the CC BY. See details at: https://creativecommons.org/share-your-work/cclicenses