**title "ND 8th Grade Math Prioritized Standards Scales"**2019 by Kelli Graber

under license"Creative Commons Attribution Non-Commercial Share Alike"

- Subject:
- Mathematics
- Level:
- Middle School
- Material Type:
- Assessment

## Standards

Learning Domain: Expressions and Equations

Standard: Develop, know and apply the properties of integer exponents to generate equivalent numeric and algebraic expressions.

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Learning Domain: Expressions and Equations

Standard: Use square root and cube root symbols to represent solutions to equations of the form x² = p and x³ = p, where p is a positive rational number. Evaluate square roots of small perfect squares and cube roots of small perfect cubes. Classify radicals as rational or irrational.

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Learning Domain: Expressions and Equations

Standard: 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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Learning Domain: Expressions and Equations

Standard: 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 equation y = mx 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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Learning Domain: Expressions and Equations

Standard: Solve linear equations in one variable. a. Give examples of linear equations in one variable with one solution, infinitely many solutions, or no solutions. Show which of these possibilities is the case by successively transforming the given equation into simpler forms, until an equivalent equation of the form x = a, a = a, or a = b results (where a and b are different numbers). b. Solve linear equations with rational number coefficients, including equations whose solutions require expanding expressions using the distributive property and collecting like terms.

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Learning Domain: Functions

Standard: Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, and/or by verbal descriptions).

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Learning Domain: Functions

Standard: 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.

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Learning Domain: Functions

Standard: Describe qualitatively the functional relationship between two quantities by analyzing a graph (may include where the function is increasing or decreasing, linear or nonlinear, etc.). Sketch a graph that exhibits the qualitative features of a function that has been described verbally.

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Learning Domain: Geometry

Standard: Use informal arguments to establish facts about: a. the angle sum and exterior angles of triangles b. the angles created when parallel lines are cut by a transversal c. the angle-angle criterion for similarity of triangles

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Learning Domain: Geometry

Standard: Apply the Pythagorean Theorem to determine unknown side lengths in right triangles in real world and mathematical problems in two and three dimensions

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Learning Domain: Geometry

Standard: Know the formulas for the volume of cones, cylinders and spheres. Use the formulas to solve real world and mathematical problems.

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Learning Domain: The Number System

Standard: Use rational approximations of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line diagram, and estimate the value of expressions (such as π²).

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Learning Domain: Statistics and Probability

Standard: Know that straight lines are widely used to model relationships between two quantitative variables. For scatter plots that suggest a linear association, informally fit a straight line, and informally assess the model fit by judging the closeness of the data points to the line.

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