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Choosing Between Home Appliances: Benefits to the Planet and Your Wallet part of SISL:2012 Sustainability in Math Workshop:Activities
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.
Understanding Exponential Growth in the Context of Population Models part of National Numeracy Network:Teaching Resources:Quantitative Writing:Examples
This set of short assignments gives students practice with exponential models in the context of the growing human population.