# Chelmsford

Districts Schools ## 2018 Item by Item Results for GRADE 08 MATHEMATICS

### Number of Students Included: 383     Mode: Online

 Chelmsford - GRADE 08 MATHEMATICS ITEM INFORMATION PERCENT OF DISTRICT'S POSSIBLE POINTS ITEM TYPE REPORTING CATEGORY STANDARD ITEM DESC POSSIBLE POINTS CHELMSFORD STATE DISTRICT-STATE DIFFERENCE 1 SR EE 8.EE.B.05 Compare characteristics of two different proportional relationships represented by lines on a coordinate plane. 1 90% 82% 8 2 SR EE 8.EE.A.04 Convert a number in scientific notation to standard notation. 1 67% 68% -1 3 SR EE 8.EE.C.07 Find the value of the unknown variable in a given equation. 1 56% 44% 12 4 SA GE 8.G.A.04 Given two similar rectangles, find the length of a corresponding side. 1 56% 39% 17 5 CR FN 8.F.B.04 Determine output values of a graphed function for given input values, and write an expression that represents the output values for a given context. 4 71% 61% 10 6 SA NS 8.NS.A.02 Approximate the value of a square root expression in a given context. 1 35% 22% 13 7 SR EE 8.EE.B.05 Compare characteristics of two different proportional relationships. 1 69% 63% 6 8 SR NS 8.NS.A.01 Identify which number in a list of numbers is irrational. 1 38% 38% 0 9 SR SP 8.SP.A.04 Make comparisons of two different groups using a two-way table. 1 79% 68% 11 10 SR FN 8.F.A.03 Determine which equation in a list of equations represents a linear function. 1 44% 42% 2 11 SA FN 8.F.A.01 Graph a linear function given the equation of the line. 1 69% 61% 8 12 CR EE 8.EE.A.02 Find the value of the unknown variable in a given equation for different situations. 4 58% 48% 10 13 SA NS 8.NS.A.02 Approximate the square root of a given number on a number line. 1 75% 68% 7 14 SR EE 8.EE.C.08 Determine the solution for a linear system of equations. 1 50% 44% 6 15 SR GE 8.G.A.03 Select the graph of an image after a series of transformations, and determine the rule for finding the coordinates of an image after a series of transformations. 2 57% 53% 4 16 SR EE 8.EE.A.03 Convert a number in standard notation to scientific notation. 1 59% 62% -3 17 SR FN 8.F.A.02 Determine the linear relationship with the greatest rate of change from among different linear representations. 1 50% 42% 8 18 SR GE 8.G.C.09 Find the volume of a cylinder given its radius and height. 1 74% 62% 12 19 SR EE 8.EE.B.06 Find the equation of a line that has the same slope as a given line graphed on a coordinate plane. 1 44% 37% 7 20 SR EE 8.EE.A.01 Use the properties of exponents to determine which expression is equivalent to the given expression. 1 43% 44% -1 21 SR EE 8.EE.B.05 Determine which graph represents a proportional relationship in a given context. 1 89% 82% 7 22 SR FN 8.F.B.04 Given a table of values, find the initial value (y-intercept) of a linear function that models a given context. 1 92% 91% 1 23 SR EE 8.EE.B.06 Use similar triangles to compare the slope of two line segments on the same line. 1 56% 54% 2 24 SR GE 8.G.A.05 Given two triangles are similar, find the measurement of a corresponding angle. 1 83% 70% 13 25 CR GE 8.G.A.02 Describe the transformation that produced a given result and understand that transformations preserve congruence. 4 59% 50% 9 26 SR GE 8.G.A.01 Determine which graph shows the image of a figure after a given transformation. 1 81% 72% 9 27 SA EE 8.EE.C.08 Find the value of one variable in a system of linear equations that represent a given context. 1 78% 70% 8 28 SR EE 8.EE.B.05 Determine which equation represents a proportional relationship in a given context. 1 80% 73% 7 29 SR GE 8.G.B.07 Use the Pythagorean theorem to find the missing side length of a triangle. 1 74% 71% 3 30 SR FN 8.F.B.04 Identify the equation that represents a given context. 1 86% 81% 5 31 SA GE 8.G.A.03 Graph the image of a given triangle after a rotation. 1 40% 33% 7 32 CR SP 8.SP.A.03 Use the equation of a line that models a given context to interpret the slope and intercept, and to solve problems related to the context. 4 58% 47% 11 33 SA SP 8.SP.A.01 Determine which points on a scatter plot are outliers. 1 91% 85% 6 34 SA EE 8.EE.C.08 Determine the solution for a linear system of equations given its graph. 1 80% 73% 7 35 SR GE 8.G.A.02 Describe the sequence of transformations to map a figure to its image and understand that transformations preserve congruence. 2 70% 61% 9 36 SR GE 8.G.B.08 Use the Pythagorean theorem to find the distance between two points on a map. 1 43% 41% 2 37 SA EE 8.EE.C.07 Find the value of the unknown variable in a given equation. 1 49% 43% 6 38 SR FN 8.F.A.03 Determine which graph represents a linear function. 1 60% 46% 14 39 SR GE 8.G.A.02 Determine which triangle is congruent to a given triangle. 1 72% 73% -1 40 SR FN 8.F.A.01 Determine which mapping is not a function. 1 66% 60% 6

Notes: Results in grades 4, 5, 7 and 8 in 2018 are not generated for paper-based testing because the majority of students participated in computer-based testing.