Slicing Cylinders part of Spatial Thinking Workbook:Teaching Activities
Carol Ormand Ph.D., Carleton College
Students identify and draw slices through cylinders and partial cylinders, and use gestures to visualize slicing planes. This practice with visualizing slices through idealized geometric shapes is preparation for visualizing slices through geological features.

Climate Justice, Life Expectancy, and Gender Disparities in Intermediate Algebra part of Curriculum for the Bioregion:Activities
Tatiana Mihaylova, Bellevue Community College
After an introduction to climate justice and life expectancy, students complete a two-part project. For the first part of the project, students use life expectancy data and plots using the Cartesian coordinate system to make conclusions about the impact of climate change on health and longevity and to explore gender differences. For the second part of the project, students continue to practice math skills, and also practice math communication and build their math literacy, by engaging civically through conversation about the first part of their project, as well as how they can take action to support gender equity through family planning and education for women and girls as a way to address climate change.

How Many Plants Make a Future? The Carbon Dioxide Challenge part of Curriculum for the Bioregion:Activities
Rus Higley, Highline Community College Marine Science and Technology Center, Vanessa Hunt and Timothy Sorey, Central Washington University
This activity focuses on the role of photosynthesis in a sustainable future. Students explore the effect of photosynthesis and respiration in a 'closed systems' containing plankton, marine plants, and fish. By calculating carbon dioxide uptake and production in these systems, they predict a plant: animal ratio sufficient to maintain a system in carbon dioxide 'balance' for one hour.