IXL - Oklahoma eighth-grade math standards

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Skills available for Oklahoma eighth-grade math standards

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Standards document:

2010 Common Core State Standards 2010 Common Core State Standards
2009 Oklahoma Priority Academic Student Skills 2009 Oklahoma Priority Academic Student Skills

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8.1 Algebraic Reasoning: Patterns and Relationships

8.1.1 Equations
8.1.1.a Model, write, and solve multi-step linear equations with one variable using a variety of methods to solve application problems.
8.1.1.b Graph and interpret the solution to one- and two-step linear equations on a number line with one variable and on a coordinate plane with two variables.
8.1.1.c Predict the effect on the graph of a linear equation when the slope or y-intercept changes (e.g., make predictions from graphs, identify the slope or y-intercept in the equation y = mx + b and relate to a graph).
8.1.1.d Apply appropriate formulas to solve problems (e.g., d=rt, I=prt).
8.1.2 Model, write, solve, and graph one- and two-step linear inequalities with one variable.

8.2 Number Sense and Operation

8.2.1 Represent and interpret large numbers and numbers less than one in exponential and scientific notation.
8.2.2 Number Operations
8.2.2.a Use the rules of exponents, including integer exponents, to solve problems (e.g., 7? ¡P 7? = 7 to the 5th power, 3 to the -10th ¡P 3 to the 8th power = 3-?).
8.2.2.b Solve problems using scientific notation.
- Scientific notation: Multiply numbers written in scientific notation (Eighth grade - G.3)
- Scientific notation: Divide numbers written in scientific notation (Eighth grade - G.4)
8.2.2.c Simplify numerical expressions with rational numbers, exponents, and parentheses using order of operations.

8.3 Geometry

8.3.1 Construct models, sketch (from different perspectives), and classify solid figures such as rectangular solids, prisms, cones, cylinders, pyramids, and combined forms.
8.3.2 Develop the Pythagorean Theorem and apply the formula to find the length of line segments, the shortest distance between two points on a graph, and the length of an unknown side of a right triangle.

8.4 Measurement

8.4.1 Develop and apply formulas to find the surface area and volume of rectangular prisms, triangular prisms, and cylinders (in terms of pi).
8.4.2 Apply knowledge of ratio and proportion to solve relationships between similar geometric figures.
8.4.3 Find the area of a "region of a region" for simple composite figures and the area of cross sections of regular geometric solids (e.g., area of a rectangular picture frame).
- Geometry: Area of compound figures (Fifth grade - B.19)

8.5 Data Analysis

8.5.1 Select, analyze and apply data displays in appropriate formats to draw conclusions and solve problems.
8.5.2 Determine how samples are chosen (random, limited, biased) to draw and support conclusions about generalizing a sample to a population (e.g., is the average height of a men's college basketball team a good representative sample for height predictions?).
- Statistics: Identify representative, random, and biased samples (Eighth grade - BB.6)
8.5.3 Find the measures of central tendency (mean, median, mode, and range) of a set of data and understand why a specific measure provides the most useful information in a given context.