Standardized Test Preparation

TEKS (Texas Essential Knowledge and Skills)

References: Texas Education Agency : STAAR Released Tests |

Math - Grade 8

Assessment Exam - TEKS Grade 8 Math

Mathematical process standards	eTAP Lesson
The student uses mathematical processes to acquire and demonstrate mathematical understanding.
Apply mathematics to problems arising in everyday life, society, and the workplace TX.MATH.111.10.1.A	Variable Equations in Word Problems
Personal financial literacy	eTAP Lesson
The student applies mathematical process standards to develop an economic way of thinking and problem solving useful in one's life as a knowledgeable consumer and investor
Estimate the cost of a two-year and four-year college education, including family contribution, and devise a periodic savings plan for accumulating the money needed to contribute to the total cost of attendance for at least the first year of college TX.MATH.111.10.12.G	Estimate the Cost of a College Education
Mathematical process standards	eTAP Lesson
The student uses mathematical processes to acquire and demonstrate mathematical understanding.
Use a problem-solving model that incorporates analyzing given information, formulating a plan or strategy, determining a solution, justifying the solution, and evaluating the problem-solving process and the reasonableness of the solution TX.MATH.111.10.1.B	Word Problems of Ratios & Rates
Select tools, including real objects, manipulatives, paper and pencil, and technology as appropriate, and techniques, including mental math, estimation, and number sense as appropriate, to solve problems TX.MATH.111.10.1.C	Word Problems of Ratios & Rates Variable Equations in Word Problems
Communicate mathematical ideas, reasoning, and their implications using multiple representations, including symbols, diagrams, graphs, and language as appropriate TX.MATH.111.10.1.D	Probability Data Plots
Create and use representations to organize, record, and communicate mathematical ideas TX.MATH.111.10.1.E	Equations with Unknowns
Analyze mathematical relationships to connect and communicate mathematical ideas TX.MATH.111.10.1.F	Expressing More Relationships Between Numbers
Display, explain, and justify mathematical ideas and arguments using precise mathematical language in written or oral communication TX.MATH.111.10.1.G	Historical Beginnings
Number and operations	eTAP Lesson
The student applies mathematical process standards to represent and use real numbers in a variety of forms.
Extend previous knowledge of sets and subsets using a visual representation to describe relationships between sets of real numbers TX.MATH.111.10.2.A	Real and Imaginary Numbers
Approximate the value of an irrational number, including π and square roots of numbers less than 225, and locate that rational number approximation on a number line TX.MATH.111.10.2.B	Positive and Negative Numbers
Convert between standard decimal notation and scientific notation TX.MATH.111.10.2.C	Base Ten Exponents
Order a set of real numbers arising from mathematical and real-world contexts TX.MATH.111.10.2.D
Proportionality	eTAP Lesson
The student applies mathematical process standards to use proportional relationships to describe dilations.
Generalize that the ratio of corresponding sides of similar shapes are proportional, including a shape and its dilation TX.MATH.111.10.3.A
Compare and contrast the attributes of a shape and its dilation(s) on a coordinate plane TX.MATH.111.10.3.B	Unit Preview
Use an algebraic representation to explain the effect of a given positive rational scale factor applied to two-dimensional figures on a coordinate plane with the origin as the center of dilation TX.MATH.111.10.3.C	Multiplication as Scaling
The student applies mathematical process standards to explain proportional and non-proportional relationships involving slope.
Use similar right triangles to develop an understanding that slope, m, given as the rate comparing the change in y-values to the change in x-values, (y2 - y1)/ (x2 - x1), is the same for any two points (x1, y1) and (x2, y2) on the same line TX.MATH.111.10.4.A
The student applies mathematical process standards to explain proportional and non-proportional relationships involving slope
Graph proportional relationships, interpreting the unit rate as the slope of the line that models the relationship TX.MATH.111.10.4.B
The student applies mathematical process standards to use proportional and non-proportional relationships to develop foundational concepts of functions
Represent linear proportional situations with tables, graphs, and equations in the form of y = kx TX.MATH.111.10.5.A	When to do What
The student applies mathematical process standards to use proportional and non-proportional relationships to develop foundational concepts of functions.
Represent linear non-proportional situations with tables, graphs, and equations in the form of y = mx + b, where b ≠ 0 TX.MATH.111.10.5.B
Contrast bivariate sets of data that suggest a linear relationship with bivariate sets of data that do not suggest a linear relationship from a graphical representation TX.MATH.111.10.5.C	Seeking Trends with Line Graphs
Use a trend line that approximates the linear relationship between bivariate sets of data to make predictions TX.MATH.111.10.5.D	Seeking Trends with Line Graphs
Solve problems involving direct variation TX.MATH.111.10.5.E
Distinguish between proportional and non-proportional situations using tables, graphs, and equations in the form y = kx or y = mx + b, where b ≠ 0 TX.MATH.111.10.5.F	Basic Operations
The student applies mathematical process standards to use proportional and non-proportional relationships to develop foundational concepts of functions
Identify functions using sets of ordered pairs, tables, mappings, and graphs TX.MATH.111.10.5.G	What is a Function?
The student applies mathematical process standards to use proportional and non-proportional relationships to develop foundational concepts of functions.
Identify examples of proportional and non-proportional functions that arise from mathematical and real-world problems TX.MATH.111.10.5.H	What is a Function?
The student applies mathematical process standards to use proportional and non-proportional relationships to develop foundational concepts of functions
Write an equation in the form y = mx + b to model a linear relationship between two quantities using verbal, numerical, tabular, and graphical representations TX.MATH.111.10.5.I
Expressions, equations, and relationships	eTAP Lesson
The student applies mathematical process standards to develop mathematical relationships and make connections to geometric formulas.
Describe the volume formula V = Bh of a cylinder in terms of its base area and its height TX.MATH.111.10.6.A	Rectangular Prism Volume
Model the relationship between the volume of a cylinder and a cone having both congruent bases and heights and connect that relationship to the formulas TX.MATH.111.10.6.B	Rectangular Prism Volume
The student applies mathematical process standards to develop mathematical relationships and make connections to geometric formulas
Use models and diagrams to explain the Pythagorean theorem TX.MATH.111.10.6.C	The Application of Equation Rules to Formulas
The student applies mathematical process standards to use geometry to solve problems.
Solve problems involving the volume of cylinders, cones, and spheres TX.MATH.111.10.7.A	Rectangular Prism Volume
Use previous knowledge of surface area to make connections to the formulas for lateral and total surface area and determine solutions for problems involving rectangular prisms, triangular prisms, and cylinders TX.MATH.111.10.7.B	Surface Area of 3-D Polygons
Use the Pythagorean Theorem and its converse to solve problems TX.MATH.111.10.7.C	The Application of Equation Rules to Formulas
Determine the distance between two points on a coordinate plane using the Pythagorean Theorem TX.MATH.111.10.7.D	Graphing in Four Quadrants
The student applies mathematical process standards to use one-variable equations or inequalities in problem situations.
Write one-variable equations or inequalities with variables on both sides that represent problems using rational number coefficients and constants TX.MATH.111.10.8.A	Variable Equations in Word Problems
Write a corresponding real-world problem when given a one-variable equation or inequality with variables on both sides of the equal sign using rational number coefficients and constants TX.MATH.111.10.8.B	Variable Equations in Word Problems
The student applies mathematical process standards to use one-variable equations or inequalities in problem situations
Model and solve one-variable equations with variables on both sides of the equal sign that represent mathematical and real-world problems using rational number coefficients and constants TX.MATH.111.10.8.C	Variable Equations in Word Problems
The student applies mathematical process standards to use one-variable equations or inequalities in problem situations.
Use informal arguments to establish facts about the angle sum and exterior angle of triangles, the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles TX.MATH.111.10.8.D	Add & Subtract Angle Measures, Angle Measures in Equations
The student applies mathematical process standards to use multiple representations to develop foundational concepts of simultaneous linear equations
The student is expected to identify and verify the values of x and y that simultaneously satisfy two linear equations in the form y = mx + b from the intersections of the graphed equations TX.MATH.111.10.9
Two-dimensional shapes	eTAP Lesson
The student applies mathematical process standards to develop transformational geometry concepts.
Generalize the properties of orientation and congruence of rotations, reflections, translations, and dilations of two-dimensional shapes on a coordinate plane TX.MATH.111.10.10.A	Unit Preview
Differentiate between transformations that preserve congruence and those that do not TX.MATH.111.10.10.B
Explain the effect of translations, reflections over the x- or y-axis, and rotations limited to 90°, 180°, 270°, and 360° as applied to two-dimensional shapes on a coordinate plane using an algebraic representation TX.MATH.111.10.10.C
Model the effect on linear and area measurements of dilated two-dimensional shapes TX.MATH.111.10.10.D	Surface Area of 3-D Polygons
Measurement and data	eTAP Lesson
The student applies mathematical process standards to use statistical procedures to describe data.
Construct a scatterplot and describe the observed data to address questions of association such as linear, non-linear, and no association between bivariate data TX.MATH.111.10.11.A
The student applies mathematical process standards to use statistical procedures to describe data
Determine the mean absolute deviation and use this quantity as a measure of the average distance data are from the mean using a data set of no more than 10 data points TX.MATH.111.10.11.B	Distribution Centers and Variation
The student applies mathematical process standards to use statistical procedures to describe data.
Simulate generating random samples of the same size from a population with known characteristics to develop the notion of a random sample being representative of the population from which it was selected TX.MATH.111.10.11.C	Variability
Personal financial literacy	eTAP Lesson
The student applies mathematical process standards to develop an economic way of thinking and problem solving useful in one's life as a knowledgeable consumer and investor.
Solve real-world problems comparing how interest rate and loan length affect the cost of credit TX.MATH.111.10.12.A	Interest Rate and Loan Length
Calculate the total cost of repaying a loan, including credit cards and easy access loans, under various rates of interest and over different periods using an online calculator TX.MATH.111.10.12.B	Interest Rate and Loan Length
The student applies mathematical process standards to develop an economic way of thinking and problem solving useful in one's life as a knowledgeable consumer and investor
Explain how small amounts of money invested regularly, including money saved for college and retirement, grow over time TX.MATH.111.10.12.C	Investment Growth Over Time
Calculate and compare simple interest and compound interest earnings TX.MATH.111.10.12.D	Interest Rate and Loan Length
The student applies mathematical process standards to develop an economic way of thinking and problem solving useful in one's life as a knowledgeable consumer and investor.
Identify and explain the advantages and disadvantages of different payment methods TX.MATH.111.10.12.E	Payment Methods
The student applies mathematical process standards to develop an economic way of thinking and problem solving useful in one's life as a knowledgeable consumer and investor
Analyze situations to determine if they represent financially responsible decisions and identify the benefits of financial responsibility and the costs of financial irresponsibility TX.MATH.111.10.12.F	Financially Responsible Decisions