IXL - DoDEA eighth-grade math standards

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Skills available for DoDEA eighth-grade math standards

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2009 DoDEA Content Standards 2009 DoDEA Content Standards

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8.M1 Numbers and Operations

8.M2 Algebra

8.M.2a identify and describe patterns and sequences by finding the nth term;
8.M.2b identify functions as linear or nonlinear and contrast their properties using tables, graphs, or equations;
- Nonlinear functions: Identify linear and nonlinear functions (Eighth grade - W.1)
8.M.2c analyze relationships between linear equations and their graphs by connecting the meaning of intercepts and slope to the context of the situation;
8.M.2d use symbolic algebra to represent situations and to solve problems involving linear and nonlinear relationships;
8.M.2e recognize, generate, and justify equivalent forms of algebraic expressions;
8.M.2f solve linear equations and inequalities;
8.M.2g represent situations using systems of linear equations and solve graphically;
8.M.2h represent and solve problems using various representations, e.g., graphs, tables, and equations;
8.M.2i connect the rate of change to the slope of a line;
8.M.2j analyze changes in linear relationships using graphs;
8.M.2k describe and compare how changes in a linear equation affect the related graph;

8.M3 Geometry

8.M.3a know and apply relationships among the angles, side lengths, perimeters, areas, and volumes of similar objects;
8.M.3b verify the Pythagorean Theorem;
8.M.3c apply the Pythagorean Theorem to determine if a triangle is a right triangle or to find a missing side of a right triangle;
8.M.3d identify and describe angle relationships formed by parallel lines cut by a transversal using appropriate terminology, e.g., alternate interior, alternate exterior, supplementary, vertical angles, corresponding angles, complementary, consecutive interior;
8.M.3e plot ordered pairs of rational numbers on the coordinate plane in all four quadrants;
8.M.3f use geometric models to represent and explain numerical and algebraic relationships;

8.M4 Measurement

8.M.4a calculate the surface area and volume of selected prisms, pyramids and cylinders;
8.M.4b use formulas to a specified level of precision in finding the surface area and volume of prisms, pyramids and cylinders and the volume of spheres and cones;
8.M.4c find the sum of the interior and exterior angles of regular convex polygons with and without the use of a protractor;
8.M.4d solve simple rate problems;

8.M5 Data Analysis and Probability

8.M.5a know and use the correct graphical representations for discrete and continuous data;
8.M.5b find, interpret, and use measures of center, quartile, and interquartile range to compare two sets of data;
8.M.5c find the equation of a line of best fit for data represented as a scatter plot;
- Charts and graphs: Scatter plots (Eighth grade - N.13)
8.M.5d compare sampling methods and analyze effects of random versus biased sampling and justify conclusions;
- Statistics: Identify representative, random, and biased samples (Eighth grade - BB.6)
8.M.5e construct convincing and appropriate arguments for a conclusion based on analysis of data presented;
8.M.5f identify faulty arguments or common errors in data analysis;
- Statistics: Identify representative, random, and biased samples (Eighth grade - BB.6)
8.M.5g compute the probability of the occurrence of independent and simple dependent events;
8.M.5h differentiate between permutations and combinations;