Rates and Proportions: A Lost Beach
Instructional Resource
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ESRI GeoInquiries - Resource Provider
California Common Core State Standards - Mathematics
- 8.F.B.4 Construct a function to model a linear relationship between two quantities. Determine the rate of change and initial value of the function from a description of a relationship or from two (x, y) values, including reading these from a table or from a graph. Interpret the rate of change and initial value of a linear function in terms of the situation it models, and in terms of its graph or a table of values.
- 8.EE.B.5 Graph proportional relationships, interpreting the unit rate as the slope of the graph. Compare two different proportional relationships represented in different ways. For example, compare a distance-time graph to a distance-time equation to determine which of two moving objects has greater speed.
- HSF-LE.A.1.b Recognize situations in which one quantity changes at a constant rate per unit interval relative to another.
Rates and Proportions: A Lost Beach
Instructional Resource
Determine the rate of coastal erosion by estimating changes in historical aerial photos. Students will graphically model a proportional relationship, extending the graph
to predict a future outcome.