Skills available for
Oregon eighth-grade math standards
IXL's eighth-grade skills will
be aligned to the 2007 Oregon Standards soon!
Until then, you can view a complete list of
eighth-grade
standards below.
Standards
are in black
and IXL math skills are in blue. Hold your
mouse over the name of a skill to view a sample problem.
Click on the name of a skill to practice that skill.
Standards document:
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8.1
Algebra
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8.1.1
Translate among contextual, verbal, tabular, graphical, and algebraic representations of linear functions.
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8.1.2
Determine the slope of a line and understand that it is a constant rate of change.
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8.1.3
Identify and interpret the properties (i.e. slope, intercepts, continuity, and discreteness) of linear relationships as they are shown in the different representations and recognize proportional relationships (y/x = k or y = kx) as a special case.
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8.1.4
Use linear functions and equations to represent, analyze and solve problems, and to make predictions and inferences.
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8.1.5
Relate systems of two linear equations in two variables and their solutions to pairs of lines that are intersecting, parallel, or the same line.
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8.1.6
Use informal strategies (e.g., graphs or tables) to solve problems involving systems of linear equations in two variables.
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8.2
Data Analysis and Algebra
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8.2.1
Organize and display data (e.g., histograms, box-and-whisker plots, scatter plots) to pose and answer questions; and justify the reasonableness of the choice of display.
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8.2.2
Use measures of center and spread to summarize and compare data sets.
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8.2.3
Interpret and analyze displays of data and descriptive statistics.
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8.2.4
Compare descriptive statistics and evaluate how changes in data affect those statistics.
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8.2.5
Describe the strengths and limitations of a particular statistical measure, and justify or critique its use in a given situation.
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8.2.6
Use sample data to make predictions regarding a population.
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8.2.7
Identify claims based on statistical data and evaluate the reasonableness of those claims.
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8.2.8
Use data to estimate the likelihood of future events and evaluate the reasonableness of predictions.
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8.3
Geometry and Measurement
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8.3.1
Use properties of parallel lines, transversals, and angles to find missing sides and angles, and to solve problems including determining similarity or congruence of triangles.
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8.3.2
Use models to show that the sum of the angles of any triangle is 180 degrees and apply this fact to find unknown angles.
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8.3.3
Use models and logical arguments to show that the sum of the angles of any quadrilateral is 360 degrees, and apply this fact to find unknown angles.
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8.3.4
Use models to explore the validity of the Pythagorean Theorem, and use it to find missing lengths.
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8.3.5
Apply the Pythagorean Theorem to find distances in a variety of 2- and 3-dimensional contexts, including distances on coordinate graphs.
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8.3.6
Use models and referents to explore and estimate square roots.
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