Place value, whole numbers, fractions, decimals and integers, and computing with them accurately and efficiently.
8.2 Number and operations: representing and using real numbers in many forms
8.2A Use a visual model to describe how sets of real numbers relate, extending earlier work with sets and subsets
8.2B Approximate an irrational number, including π and the square root of a number below 225, and mark the rational approximation on a number line
8.2C Convert numbers between standard decimal form and scientific notation
8.2D Put a group of real numbers in order, using numbers from math and real-world situations
Proportional Relationships
Ratios, rates, percents and proportional relationships, and using them to solve problems.
8.3 Proportionality: using proportional relationships to describe dilations
8.3A Generalize that similar shapes, a shape and its dilation among them, have proportional matching sides
8.3B Describe how a shape and each of its dilations are alike and different, using a coordinate plane
8.3C Use algebra to explain how a positive rational scale factor affects 2-D figures on a coordinate plane when the origin is the center of dilation
8.4 Proportionality: explaining proportional and non-proportional relationships that involve slope
8.4A Use similar right triangles to show that slope m, the change in y over the change in x, (y2 - y1)/(x2 - x1), is constant between any two points on a line
8.4B Graph proportional relationships, and read the slope of the resulting line as the unit rate
8.4C Find the rate of change (slope) and y-intercept from a table or graph in math and real-world problems
8.5 Proportionality: building early function concepts from proportional and non-proportional relationships
8.5A Represent linear proportional situations using tables, graphs, and equations of the form y = kx
8.5B Represent linear non-proportional situations using tables, graphs, and equations of the form y = mx + b with b not equal to 0
8.5C Using graphs, tell apart bivariate data showing a linear pattern from bivariate data showing none
8.5D Use a trend line approximating a linear relationship in bivariate data to make predictions
8.5E Solve direct variation problems
8.5F Use tables, graphs, and equations (y = mx + b with b not equal to 0, or y = kx) to separate proportional situations from non-proportional ones
8.5G Identify functions from graphs, mappings, tables, and sets of ordered pairs
8.5H Spot functions that are proportional and ones that are not, drawn from math and real-world problems
8.5I Model how two quantities are linearly related by writing y = mx + b, working from words, numbers, tables, or graphs
Expressions, Equations, and Relationships
Writing, simplifying and solving expressions, equations and inequalities, and relating them to graphs and tables.
8.6 Expressions, equations, and relationships: developing mathematical relationships and connecting them to geometric formulas
8.6A Describe the cylinder volume formula V = Bh using the area of its base and its height
8.6B Model how a cone’s volume compares with a cylinder’s when their bases and heights match, and connect it to the formulas
8.6C Explain the Pythagorean theorem using models and diagrams
8.7 Expressions, equations, and relationships: using geometry to solve problems
8.7A Solve volume problems for cylinders, cones, and spheres
8.7B Build on surface area knowledge to connect to the lateral and total surface area formulas, and solve problems for cylinders and for rectangular and triangular prisms
8.7C Apply the Pythagorean Theorem, along with its converse, to solve problems
8.7D Use the Pythagorean Theorem to find how far apart two coordinate-plane points are
8.8 Expressions, equations, and relationships: applying equations or inequalities with one variable to problem situations
8.8A Write a one-variable equation or inequality for a problem, with the variable on each side and rational coefficients and constants
8.8B Write a real-world problem to match a given equation or inequality that has the variable on each side of the equal sign, with rational coefficients and constants
8.8C Model and solve math and real-world problems with one-variable equations that have the variable on each side of the equal sign, using rational coefficients and constants
8.8D Argue informally to establish facts about triangle angle sums and exterior angles, angles formed when a transversal crosses parallel lines, and the Angle-Angle similarity criterion for triangles
8.9 Expressions, equations, and relationships: using the graphs of two linear equations (y = mx + b) to build foundations for simultaneous equations
8.9A Identify and verify the x and y values that satisfy two linear equations (y = mx + b) at once, using the intersection of their graphs
Measurement and Data
Area, surface area and volume formulas, and summarizing data with displays and statistics.
8.11 Measurement and data: describing data with statistical procedures
8.11A Build a scatterplot, then say what the data show about association (linear, non-linear, or none) in bivariate data
8.11B Find the mean absolute deviation, using up to 10 data points, as the average distance of the data from the mean
8.11C Simulate drawing equal-size random samples from a population whose characteristics are known, to build the idea that a random sample represents its population
Two-Dimensional Shapes
Transformations of shapes on the coordinate plane: translations, reflections, rotations and dilations.
8.10 Two-dimensional shapes: developing ideas of transformational geometry
8.10A Generalize how dilations, translations, reflections, and rotations of 2-D shapes on a coordinate plane affect orientation and congruence
8.10B Distinguish transformations that preserve congruence from those that do not
8.10C Use algebra to explain how 2-D shapes on a coordinate plane are affected by translations, by reflections across the y-axis or x-axis, and by rotations of only 90, 180, 270, or 360 degrees
8.10D Model how dilating a 2-D shape changes its linear and area measurements
Personal Financial Literacy
Earning, saving, spending, borrowing and planning with money.
8.12 Personal financial literacy: economic thinking and problem solving for consumers and investors
8.12A Solve real-world problems on how loan length and interest rate affect the cost of credit
8.12B Use an online calculator to find the full cost of repaying a loan, covering both credit cards and loans with easy access, under various interest rates and over different time periods
8.12C Explain how small, regular investments, including savings for retirement and college, grow over time
8.12D Calculate and compare earnings from simple interest and compound interest
8.12E Identify and explain the pros and cons of different payment methods
8.12F Analyze situations to decide whether they reflect financially responsible choices, and identify the benefits of responsibility and costs of irresponsibility
8.12G Estimate the cost of attending college for four years or for two, accounting for family contribution, then devise a periodic savings plan to cover the first year or more of costs
Mathematical Process Standards
The ways students do math at every grade: problem solving, choosing tools, communicating and justifying reasoning.
8.1 Mathematical process standards: using math processes to build and show understanding
8.1A Use math to handle problems from daily life, community, and work
8.1B Work through problems with a model: analyze info, plan, solve, justify, then evaluate the process and whether the answer is reasonable
8.1C Choose suitable tools (objects, manipulatives, paper, technology) and techniques (mental math, estimation, number sense) to solve problems
8.1D Share math ideas, reasoning, and consequences through symbols, diagrams, graphs, and words
8.1E Make representations, and use them to sort out, log, and share math ideas
8.1F Analyze mathematical relationships to link and share math ideas
8.1G Present, explain, and defend math ideas and arguments in precise language, written or spoken
There are 52 8th Grade TEKS Math Standards on this page, in 7 strands: Number and Operations, Proportional Relationships, Expressions, Equations, and Relationships, Measurement and Data, Two-Dimensional Shapes, Personal Financial Literacy, and Mathematical Process Standards.
How do I write an assessment for an 8th Grade TEKS Math standard?
Pick a standard on this page and choose Make a quiz or Make an exit ticket. AssessmentWiz opens the generator with the standard's code and text filled in, so every question targets that standard.
What does a code like 8.2A mean?
TEKS math codes read grade, knowledge and skills statement, student expectation. In 8.2A, the first number is the grade (K for kindergarten), the next number is the knowledge and skills statement, and the letter is the student expectation under it.