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Supply and Demand
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ORC# 1100
Resource Information
Resource URL: http://illuminations.nctm.org/LessonDetail.aspx?ID=L382
Resource Type: Lessons
Discipline: Mathematics
Grades: Grades 9–11
Professional Commentary: This activity focuses on having students create and solve systems of linear equations in real-world settings. By solving a system of two equations in two unknowns, students find the equilibrium point for supply and demand....
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Making Sense of Percent Concentrations 2: Don't Freeze the Engine
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ORC# 7735
Resource Information
Resource URL: http://illuminations.nctm.org/LessonDetail.aspx?ID=L649
Resource Type: Lessons
Discipline: Mathematics
Grades: Grades 9–12
Professional Commentary: Students read an antifreeze chart to determine the necessary mix of antifreeze and water for protection against various temperatures. Students then numerically analyze a particular cooling system to determine how much fluid to drain and replace with antifreeze to get the desired percentage concentration of antifreeze....
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