Common Core Math - Grade 8
Lesson Plan
Use the equation of a linear model to solve problems in the context of bivariate measurement data
Goals / Objectives
Write the equation y = mx + b for an informally fitted line on a scatter plot by identifying the slope and y-intercept from the graph or data
Interpret the slope of a linear model in context, using the language "for each additional unit increase in [x], [y] is associated with a change of [m] units"
Interpret the y-intercept of a linear model in context and evaluate whether the intercept has a meaningful real-world interpretation for the given data
Use the equation of a linear model to make predictions by substituting values of the explanatory variable, distinguishing between interpolation (within the data range) and extrapolation (beyond the data range)
Recognize the limitations of a linear model, including that predictions from extrapolation may be unreliable and that association does not imply causation
Standards
8.SP.A.3
8.SP.A.3: Use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercept. For example, in a model for a biology experiment, interpret a slope of 1.5 cm/hr as meaning that an additional hour of sunlight each day is associated with an additional 1.5 cm in mature plant height.
Academic Vocabulary
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Materials
Remediation
Enrichment
Accommodations
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