8th grade · Functions
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.
2 interactive, auto-graded activities for 8th grade students practising 8.F.B.4. Mini Labs put the standard to work in a real scenario; Skill Practice builds fluency on the standard alone. Every one is randomized per student, so each learner gets their own numbers.
Students construct linear functions to model real-world situations at a city sports and activity center. Using descriptions, tables, graphs, and data points, they identify rates of change and initial values, write equations in the form y = mx + b, and interpret slope and intercept in context. Aligned to CCSS 8.F.B.4 and ideal for practice or assessment.
Labs run 2 to 4 class periods and connect several standards into one project.
Curbside is an interactive Grade 8 math lab where students run a food truck and use real math to decide if it makes money. Across 7 auto-graded worksheets they build revenue, cost, break-even, and profit, compare competitors, and weigh a marketing curve. A hands-on way to make expressions, equations, and functions feel real. Common Core aligned (8.EE, 8.F).
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