The DeKalb County School System
The DeKalb County School System
The Department of Middle School Instruction
|Standards-based Lesson Plan Template Standards/Elements: |
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|Define, Evaluate, and Compare Functions. |
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|MGSE8.F.1 Understand that a function is a rule that assigns to each input exactly one output. The graph of a function is the set of ordered pairs consisting of an input and the corresponding output. |
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|MGSE8.F.2 Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, or by verbal descriptions). |
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|MGSE8.F.3 Interpret the equation y = mx + b as defining a linear function, whose graph is a straight line; give examples of functions that are not linear. |
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|MGSE8.F.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 table of values. |
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|MGSE8.EE.5 Graph proportional relationships, interpreting the unit rate as the slope of the graph. Compare two different proportional relationships represented in different ways. |
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|MGSE8.EE.6 Use similar triangles to explain why the slope m is the same between any two distinct points on a non-vertical line in the coordinate plane; derive the equations y = mx + b for a line through the origin and the |
|equation y = mx + b for a line intercepting the vertical axis at b. |
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|MGSE8.EE.8 Analyze and solve pairs of simultaneous linear equations (systems of equations). |
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|MGSE8.EE.8a Understand that solutions to a system of two linear equations in two variables correspond to points of intersection of their graphs, because points of intersection satisfy both equations simultaneously. |
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|MGSE8.EE.8b Solve systems of two linear equations in two variables algebraically, and estimate solutions by graphing the equations. Solve simple cases by inspection. |
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|MGSE8.EE.8c Solve real-world and mathematical problems leading to two linear equations in two variables. |
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|Essential Question(s): |GPS Task or Teacher Design Task |
|How can I describe a situation given a graph? |Slope and Slope-Intercept Form (y=mx+b) |
|How do I graph a linear equation in y=mx+b? |Systems of Equations (Graphing) |
|How do I graph a linear equation? |Systems of Equations (Substitution) |
|What does the point of intersection mean? |Systems of Equations (Elimination) |
|What is a system of equations? |Review High School Concepts |
|What does it mean to solve a system of linear equations? | |
|How do I decide which method would be easier to use to solve a particular system of equations? | |
|How can I translate a problem situation into a system of equations? | |
|What does the solution to a system tell me about the answer to a problem situation? | |
|How can I interpret the meaning of a “system of equations” algebraically and geometrically? | |
|How can the solution to a system be interpreted geometrically? | |
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|Instructional Board Task Display: |
| *Learning Strategies and other Researched Best Practices |
|*Chunking the text |
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