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Indiana Standards

Indiana 8th Grade Math Standards

All 20 Indiana math standards for 8th grade, each explained in plain English. The official wording is in Indiana Department of Education's document, linked at the end of this page.

20 standards

Number Sense

4 standards
8.NS.1
Tell rational from irrational numbers and explain the difference, write numbers as decimals, show rational ones end or repeat, and turn repeating decimals into fractions.
8.NS.2
Estimate irrational numbers with nearby decimals, like the square root of 2 being about 1.41, to compare them, place them on a number line and estimate expressions.
8.NS.3
Apply exponent rules to rewrite number expressions with integer exponents, including negative and zero exponents, like 2^3 x 2^-5 = 2^-2 = 1/4.
8.NS.4
Solve real problems with positive and negative rational numbers that take several steps, like budgeting with income, expenses and discounts.

Algebra and Functions

8 standards
8.AF.1
Solve linear equations and inequalities with fraction or decimal coefficients, even ones needing the distributive property and like terms, and use them in real problems.
8.AF.2
Create one-variable linear equations that have one solution, no solution or infinitely many solutions, and explain why each fits its type, like x + 2 = x + 5 having none.
8.AF.3
Explain that a function gives exactly one output y for each input x, and that its graph is the set of all its x, y pairs.
8.AF.4
Describe what a graph shows about how two quantities relate, like where it rises, falls, curves or peaks, and sketch a graph to match a described situation.
8.AF.5
Explain that y = mx + b graphs as a line, give nonlinear examples like y = x squared, and contrast linear and nonlinear functions in tables, graphs, words and equations.
8.AF.6
Write a linear function from a description, table or graph, and explain what the slope m and starting value b mean in context, like $5 per hour plus a $20 fee.
8.AF.7
Compare two linear functions shown in different ways, like a table and an equation, to decide which grows faster, such as which runner is quicker.
8.AF.8
Estimate the solution of a system of two equations by graphing the lines and finding where they cross, and judge whether the estimate makes sense.

Geometry and Measurement

3 standards
8.GM.1
Explore what translations, rotations, reflections and dilations do to flat shapes on the coordinate plane, like sliding a triangle 3 units right.
8.GM.2
Solve real problems about the volume of cones, spheres and pyramids and the surface area of spheres, like how much ice cream fits in a cone.
8.GM.3
Use the Pythagorean Theorem to find a missing side of a right triangle in real and math problems, like how long a ladder must be to reach a window.

Data Analysis, Statistics, and Probability

5 standards
8.DSP.1
Make and read scatter plots of paired measurements, like height and arm span, and describe clusters, outliers and positive, negative, linear or nonlinear association.
8.DSP.2
Write and use a line of fit equation to predict values inside and beyond the data, and explain what its slope and y-intercept mean in the situation.
8.DSP.3
List outcomes of compound events with organized lists, tables and tree diagrams, and find their probabilities for independent and dependent events, like two coin flips.
8.DSP.4
Find the probability of a compound event as the share of outcomes where it happens, and use terms like independent, dependent, complementary and mutually exclusive.
8.DSP.5
Develop and use the multiplication counting principle to count outcomes when there are many, like 4 shirts and 3 pants making 12 outfits.

The official Indiana documents

The plain-English lines on this page are EMStudio's own explanations of Indiana's standards, not the official wording, which Indiana Department of Education publishes in the documents above. Codes and strand names identify each standard.