# Cambridge

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

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

 Cambridge - GRADE 08 MATHEMATICS ITEM INFORMATION PERCENT OF DISTRICT'S POSSIBLE POINTS ITEM TYPE REPORTING CATEGORY STANDARD ITEM DESC POSSIBLE POINTS CAMBRIDGE 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 88% 82% 6 2 SR EE 8.EE.A.04 Convert a number in scientific notation to standard notation. 1 57% 68% -11 3 SR EE 8.EE.C.07 Find the value of the unknown variable in a given equation. 1 54% 44% 10 4 SA GE 8.G.A.04 Given two similar rectangles, find the length of a corresponding side. 1 40% 39% 1 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 64% 61% 3 6 SA NS 8.NS.A.02 Approximate the value of a square root expression in a given context. 1 27% 22% 5 7 SR EE 8.EE.B.05 Compare characteristics of two different proportional relationships. 1 66% 63% 3 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 71% 68% 3 10 SR FN 8.F.A.03 Determine which equation in a list of equations represents a linear function. 1 48% 42% 6 11 SA FN 8.F.A.01 Graph a linear function given the equation of the line. 1 70% 61% 9 12 CR EE 8.EE.A.02 Find the value of the unknown variable in a given equation for different situations. 4 48% 48% 0 13 SA NS 8.NS.A.02 Approximate the square root of a given number on a number line. 1 66% 68% -2 14 SR EE 8.EE.C.08 Determine the solution for a linear system of equations. 1 61% 44% 17 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 54% 53% 1 16 SR EE 8.EE.A.03 Convert a number in standard notation to scientific notation. 1 51% 62% -11 17 SR FN 8.F.A.02 Determine the linear relationship with the greatest rate of change from among different linear representations. 1 53% 42% 11 18 SR GE 8.G.C.09 Find the volume of a cylinder given its radius and height. 1 57% 62% -5 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 41% 37% 4 20 SR EE 8.EE.A.01 Use the properties of exponents to determine which expression is equivalent to the given expression. 1 50% 44% 6 21 SR EE 8.EE.B.05 Determine which graph represents a proportional relationship in a given context. 1 83% 82% 1 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 58% 54% 4 24 SR GE 8.G.A.05 Given two triangles are similar, find the measurement of a corresponding angle. 1 62% 70% -8 25 CR GE 8.G.A.02 Describe the transformation that produced a given result and understand that transformations preserve congruence. 4 47% 50% -3 26 SR GE 8.G.A.01 Determine which graph shows the image of a figure after a given transformation. 1 68% 72% -4 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 68% 70% -2 28 SR EE 8.EE.B.05 Determine which equation represents a proportional relationship in a given context. 1 68% 73% -5 29 SR GE 8.G.B.07 Use the Pythagorean theorem to find the missing side length of a triangle. 1 77% 71% 6 30 SR FN 8.F.B.04 Identify the equation that represents a given context. 1 84% 81% 3 31 SA GE 8.G.A.03 Graph the image of a given triangle after a rotation. 1 31% 33% -2 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 53% 47% 6 33 SA SP 8.SP.A.01 Determine which points on a scatter plot are outliers. 1 89% 85% 4 34 SA EE 8.EE.C.08 Determine the solution for a linear system of equations given its graph. 1 70% 73% -3 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 59% 61% -2 36 SR GE 8.G.B.08 Use the Pythagorean theorem to find the distance between two points on a map. 1 39% 41% -2 37 SA EE 8.EE.C.07 Find the value of the unknown variable in a given equation. 1 58% 43% 15 38 SR FN 8.F.A.03 Determine which graph represents a linear function. 1 49% 46% 3 39 SR GE 8.G.A.02 Determine which triangle is congruent to a given triangle. 1 79% 73% 6 40 SR FN 8.F.A.01 Determine which mapping is not a function. 1 69% 60% 9

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.