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Hybrid Vehicles: Are They Worth It? part of SISL:2012 Sustainability in Math Workshop:Activities
Lori Carmack
In this project, students analyze the costs of gasoline nationwide. They also investigate the cost-effectiveness of purchasing a new hybrid vehicle as opposed to purchasing a new vehicle that runs solely on gasoline.

Population Growth, Ecological Footprints, and Overshoot part of SISL:2012 Sustainability in Math Workshop:Activities
Rikki Wagstrom, Metropolitan State University
In this activity, students develop and apply linear, exponential, and rational functions to explore past and projected U.S. population growth, carbon footprint trend, ecological overshoot, and effectiveness of hypothetical carbon dioxide reduction initiatives.

Choosing Between Home Appliances: Benefits to the Planet and Your Wallet part of SISL:2012 Sustainability in Math Workshop:Activities
Corri Taylor, Wellesley College
Students research various options for new appliances and make purchasing decisions based not merely on purchase price, but also on energy efficiency, which has implications for the planet AND for longer-term personal finances. Students calculate the "payback period" for the more energy efficient appliance and calculate long-term savings.

A Monarchy Deposed: The Demise of the Monarch Butterfly part of SISL:2012 Sustainability in Math Workshop:Activities
Daniel Abel, Coastal Carolina University
Monarch butterflies (scientific name: Danaus plexippus) migrate annually to forests in central Mexico from Canada and California. Those surviving the 1200 - 2800 mile migration overwinter in Mexico. In this activity, students will learn about the conservation biology of monarch butterflies, threats to their survival, the implications of their potential extinction, and ways to protect the species.

How much energy do you save by doubling insulation? part of SISL:2012 Sustainability in Math Workshop:Activities
Joseph Skufca, Clarkson University
Students will be provided the governing equation for steady state heat transfer across a surface. They will use that equation to explore the effect of changing the insulation value on the amount of energy used.

Modeling: (1) Revenue Neutral Carbon Taxes; (2) Accelerated atmospheric C02 concentrations part of SISL:2012 Sustainability in Math Workshop:Activities
Martin Walter, University of Colorado at Boulder
Design a revenue neutral carbon tax and a plan for implementation; together with a model for what happens if we do not institute such a tax-system.

Should I Unplug? part of SISL:2012 Sustainability in Math Workshop:Activities
Lori Carmack
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One day it is too hot and other days it is too cold. Do we need to replace the HVAC system? part of SISL:2012 Sustainability in Math Workshop:Activities
Monika Kiss
This project will allow students to create a mathematical model to help in making decision about replacing HVAC units on a large scale.

Context-rich problem for cooperative group problem solving - Electric Force part of Starting Point: Teaching and Learning Economics:Teaching Methods:Context-Rich Problems:Examples
kenneth heller, University of Minnesota-Twin Cities
Context-rich problem for electrostatics in an introductory physics class. The instructional setting uses cooperative group problem solving.