## 8th Grade Staar

### # of questions

1

### TEKS

#### 8.2A

extend previous knowledge of sets and subsets using a visual representation to describe relationships between sets of real numbers

### # of questions

5

### TEKS

#### 8.2B

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

### # of questions

4

### TEKS

#### 8.2C

convert between standard decimal notation and scientific notation

### # of questions

11

### TEKS

#### 8.2D

order a set of real numbers arising from mathematical and real-world contexts

### # of questions

5

### TEKS

#### 8.3A

generalize that the ratio of corresponding sides of similar shapes are proportional, including a shape and its dilation

### # of questions

1

### TEKS

#### 8.3B

compare and contrast the attributes of a shape and its dilation(s) on a coordinate plane

### # of questions

10

### TEKS

#### 8.3c

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

### # of questions

4

### TEKS

#### 8.4a

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

### # of questions

11

### TEKS

#### 8.4B

graph proportional relationships, interpreting the unit rate as the slope of the line that models the relationship

### # of questions

11

### TEKS

#### 8.4C

use data from a table or graph to determine the rate of change or slope and y- intercept in mathematical and real-world problems

### # of questions

4

### TEKS

#### 8.5A

represent linear proportional situations with tables, graphs, and equations in the form of y = kx

### # of questions

3

### TEKS

#### 8.5B

represent linear non-proportional situations with tables, graphs, and equations in the form of y = mx + b, where b ≠ 0

### # of questions

3

### TEKS

#### 8.5C

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

### # of questions

11

### TEKS

#### 8.5D

use a trend line that approximates the linear relationship between bivariate sets of data to make predictions

### # of questions

4

### TEKS

#### 8.5F

distinguish between proportional and non-proportional situations using tables, graphs, and equations in the form y = kx or y = mx + b, where b ≠ 0

### # of questions

11

### TEKS

#### 8.5G

identify functions using sets of ordered pairs, tables, mappings, and graphs

### # of questions

3

### TEKS

#### 8.5H

identify examples of proportional and non-proportional functions that arise from mathematical and real-world problems

### # of questions

11

### TEKS

#### 8.5I

write an equation in the form y = mx + b to model a linear relationship between two quantities using verbal, numerical, tabular, and graphical representations

### # of questions

5

### TEKS

#### 8.6A

describe the volume formula V = Bh of a cylinder in terms of its base area and its height

### # of questions

11

### TEKS

#### 8.7A

solve problems involving the volume of cylinders, cones, and spheres

### # of questions

10

### TEKS

#### 8.7B

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