Big Ideas | Page 58

Standards Connections Next Generation Science Standards SCIENCE AND ENGINEERING PRACTICES SAMPLE STUDENT ENGAGEMENT, GRADES 6–8 Asking Questions and Explore what happens to San Francisco’s dirty water and runoff by touring the San Francisco Public Utilities Commission’s wastewater treatment facility. Defining Problems Analyzing and Interpreting Data 58 Determine your ecological footprint, using a calculator such as the one at www.earthday.org/footprint-calculator. Try inputting different responses to find out which factors or behaviors have the biggest impact on your ecological footprint. Discuss the implications for the future, given the rising world population. CROSSCUTTING CONCEPTS SAMPLE STUDENT ENGAGEMENT, GRADES 6–8 Cause and Effect Find out how California agriculture uses energy and water and how those uses affect the climate. Identify the shifts that farmers are making to reduce negative effects on climate. Systems and System Models San Francisco’s water system also generates power from the same source: the Hetch Hetchy Regional Water and Power System. View the system at prezi.com/ste1lo1ce_iq/hetch-hetchy-reservoir/. Discuss the benefits of a combined water and power system. BIG IDEAS | Grades 6–8 | SAN FRANCISCO PUBLIC UTILITIES COMMISSION