SCOPE AND SEQUENCE CHART

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GSE MATH 8 SCOPE AND SEQUENCE CHART Unit Name Unit Description Georgia Standards of Excellence Unit 1 Exponents and Equations Unit 1: Students explore and understand numbers that are not rational (irrational numbers) and approximate their value by using rational numbers. Students work with radicals and express very large and very small numbers using integer exponents. Work with radicals and integer exponents. MGSE8.EE.1 Know and apply the properties of integer exponents to generate equivalent numerical expressions. MGSE8.EE.2 Use square root and cube root symbols to represent solutions to equations. Recognize that x2 = p (where p is a positive rational number and lxl < 25) has 2 solutions and x3 = p (where p is a negative or positive rational number and lxl < 10) has one solution. Evaluate square roots of perfect squares < 625 and cube roots of perfect cubes > -1000 and < 1000. MGSE8.EE.3 Use numbers expressed in scientific notation to estimate very large or very small quantities, and to express how many times as much one is than the other. For example, estimate the population of the United States as 3 108 and the population of the world as 7 109, and determine that the world population is more than 20 times larger. MGSE8.EE.4 Add, subtract, multiply and divide numbers expressed in scientific notation, including problems where both decimal and scientific notation are used. Understand scientific notation and choose units of appropriate size for measurements of very large or very small quantities (e.g. use millimeters per year for seafloor spreading). Interpret scientific notation that has been generated by technology (e.g. calculators) Analyze and solve linear equations and pairs of simultaneous linear equations. MGSE8.EE.7 Solve linear equations in one variable. MGSE8.EE.7a 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 Duration 3 4 Weeks 6-12 Mathematics 2016-2017 1 8

equivalent equation of the form x = a, a = a, or a = b results (where a and b are different numbers). MGSE8.EE.7b Solve linear equations with rational number coefficients, including equations whose solutions require expanding expressions using the distributive property and collecting like terms. Know that there are numbers that are not rational, and approximate them by rational numbers. MGSE8.NS.1 Know that numbers that are not rational are called irrational. Understand informally that every number has a decimal expansion; for rational numbers show that the decimal expansion repeats eventually, and convert a decimal expansion which repeats eventually into a rational number. MGSE8.NS.2 Use rational approximation of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line, and estimate the value of expressions (e.g., estimate π2to the nearest tenth). For example, by truncating the decimal expansion of 2 (square root of 2), show that 2 is between 1 and 2, then between 1.4 and 1.5, and explain how to continue on to get better approximations. 2 Geometric Applications of Exponents Unit 2: Students extend their work with irrational numbers by applying the Pythagorean Theorem to situations involving right triangles, including finding distance, and will investigate proofs of the Pythagorean Theorem and its converse. Students solve real-world problems involving volume of cylinders, cones, and spheres. Understand and apply the Pythagorean Theorem. MGSE8.G.6 Explain a proof of the Pythagorean Theorem and its converse. MGSE8.G.7 Apply the Pythagorean Theorem to determine unknown side lengths in right triangles in real-world and mathematical problems in two and three dimensions. MGSE8.G.8 Apply the Pythagorean Theorem to find the distance between two points in a coordinate system. Solve real-world and mathematical problems involving volume of cylinders, cones, and spheres. MGSE8.G.9 Apply the formulas for the volume of cones, cylinders, and spheres and use them to solve real-world and mathematical problems. 6-12 Mathematics 2016-2017 2

Work w ith radicals and integer exponents. MGSE8.EE.2 Use square root and cube root symbols to represent solutions to equations. Recognize that x 2 = p (where p is a positive rational number and lxl < 25) has 2 solutions and x3 = p (where p is a negative or positive rational number and lxl < 10) has one solution. Evaluate square roots of perfect squares < 625 and cube roots of perfect cubes > -1000 and < 1000. 3 Functions and Linear Functions Unit 3: Students are introduced to relations and functions. Students define, evaluate, and compare functions. Functions are described and modeled using a variety of depictions, including algebraic representation, graphic representation, numerical tables, and verbal descriptions. Define, evaluate, and compare functions. 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. MGSE8.F.2 Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, or by verbal descriptions). Define, evaluate, and compare functions. 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. For example, the function A = s2 giving the area of a square as a function of its side length is not linear because its graph contains the points (1,1), (2,4) and (3,9), which are not on a straight line. Use functions to model relationships betw een quantities. MGSE8.F.5 Describe qualitatively the functional relationship between two quantities by analyzing a graph (e.g., where the function is increasing or decreasing, linear or nonlinear). Sketch a graph that exhibits the qualitative features of a function that has been described verbally. Understand the connections between proportional relationships, lines, and linear equations. 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. 6-12 Mathematics 2016-2017 3

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 equation y = mx for a line through the origin and the equation y = mx + b for a line intercepting the vertical axis at b. 4 Linear Models and Tables Unit 4: Students further explore functions, focusing on the study of linear functions. Students develop understanding of the connections between proportional relationships, lines, and linear equations, and solve mathematical and real-life problems involving such relationships. Slope is formally introduced, and students work with equations for slope in different forms, including comparing proportional relationships depicted in different ways (graphical, tabular, algebraic, and verbal). Students extend the study of linear relationships by exploring models and tables to describe rate of change. The study of statistics expands to bivariate data, which can be graphed and a line of best fit determined. Use functions to model relationships betw een quantities. 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 a table of values. MGSE8.F.5 Describe qualitatively the functional relationship between two quantities by analyzing a graph (e.g., where the function is increasing or decreasing, linear or nonlinear). Sketch a graph that exhibits the qualitative features of a function that has been described verbally. 3 4 Weeks Investigate patterns of association in bivariate data. MGSE8.SP.1 Construct and interpret scatter plots for bivariate measurement data to investigate patterns of association between two quantities. Describe patterns such as clustering, outliers, positive or negative association, linear association, and nonlinear association. MGSE8.SP.2 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. MGSE8.SP.3 Use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercept. MGSE8.SP.4 Understand that patterns of association can also be seen in bivariate categorical data by displaying frequencies and relative frequencies in a two-way table. a. Construct and interpret a two-way table summarizing data on two categorical variables collected from the same 6-12 Mathematics 2016-2017 4

subjects. b. Use relative frequencies calculated for rows or columns to describe possible association between the two variables. For example, collect data from students in your class on whether or not they have a curfew on school nights and whether or not they have assigned chores at home. Is there evidence that those who have a curfew also tend to have chores? 5 Solving Systems of Equations Unit 5: The final unit broadens the study of linear equations to include situations involving simultaneous equations. Using graphing, substitution, and elimination, students learn to solve systems of equations algebraically, and make applications to real-world situations. Analyze and solve linear equations and pairs of simultaneous linear equations. MGSE8.EE.8 Analyze and solve pairs of simultaneous linear equations (systems of linear equations). 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. 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. MGSE8.EE.8c Solve real-world and mathematical problems leading to two linear equations in two variables. 6 Transformations, Congruence and Similarity Unit 6: This unit centers around geometry standards related to transformations both on and off the coordinate plane translations, reflections, rotations, and dilations. Students develop understanding of congruence and similarity using physical models, transparencies, or geometry software, and learn to use informal arguments to establish proof of angle sum and exterior angle relationships. Understand congruence and similarity using physical models, transparencies, or geometry softw are. MGSE8.G.1 Verify experimentally the congruence properties of rotations, reflections, and translations: lines are taken to lines and line segments to line segments of the same length; angles are taken to angles of the same measure; parallel lines are taken to parallel lines. MGSE8.G.2 Understand that a two- dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them. MGSE8.G.3 Describe the effect of dilations, translations, rotations and reflections on two- dimensional figures using coordinates. 6-12 Mathematics 2016-2017 5

MGSE8.G.4 Understand that a two- dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two- dimensional figures, describe a sequence that exhibits the similarity between them. MGSE8.G.5 Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles. 6-12 Mathematics 2016-2017 6