Is it worth it to study for 10 more minutes?? Students analyze a scatterplot, finding the unit rate, as they consider this question. By the end, they should be able to explain whether your score will increase enough to make the 10 minutes worth it, or if the 10 minutes could be better spent elsewhere: sleeping, texting friends, surfing facebook, etc.
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8.SP.1 and 8.SP.2 Analyze a Scatterplot
8.F.2 Comparing Functions Represented in Different Ways
8.F.4 Slope and Unit Rate with Intervals Greater than 1