rate
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Slope, Constant of Proportionality, Unit Rate, Rate, Rate of Change
A question was posed recently that I find intriguing and important. The question was, “what is the difference between slope, constant of proportionality, unit rate, and rate of change?” I researched the answer to this to evaluate my own understanding of these terms. Here is what I found (and am open to feedback as my…
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Introduction to Slope
Slope is one of the the most important topics in algebra and is often understood by students at a superficial level. I suggest introducing slope first by drawing upon prior knowledge and making the concept relevant (see photo above). This includes presenting the topic using multiple representations: the original real life situation, rates (see photo…
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Starbucks would benefit from some math intervention
Starbucks has changed their rewards program to “boost participation.” The chief strategy officer apparently could use some math intervention. From USA Today (emphasis mine): “Currently, customers with “gold” status have to visit 12 times to earn a free food or drink item. Under the new program, those customers will have to earn 125 stars to…