Cohasset - GRADE 08 MATHEMATICS |

ITEM INFORMATION | | PERCENT OF DISTRICT'S POSSIBLE POINTS |

ITEM | TYPE | REPORTING CATEGORY | STANDARD | ITEM DESC | | POSSIBLE POINTS | COHASSET | STATE | DISTRICT-STATE DIFFERENCE |

1 | SR | NSEE | 8.EE.C.7 | Solve a linear equation by collecting like terms. | | 1 | 82% | 59% | 23 |

2 | SR | GE | 8.G.C.9 | Find the volume of a cylinder given its diameter and height. | | 1 | 74% | 45% | 29 |

3 | SR | GE | 8.G.A.2 | Given several transformations on a triangle, determine whether the resulting images are congruent to the original figure. | | 1 | 78% | 55% | 23 |

4 | SR | NSEE | 8.NS.A.2 | Approximate the value of a square root by showing how to find its location on a number line. | | 1 | 85% | 59% | 26 |

5 | CR | FN | 8.F.B.4 | Use the linear relationship represented in a table to determine the y-intercept and slope; to write the equation of the line; and to determine whether a given point falls on the line. | | 4 | 54% | 32% | 22 |

6 | SR | NSEE | 8.EE.A.4 | Solve a real-world problem that involves performing operations on two numbers expressed in scientific notation. | | 1 | 48% | 49% | -1 |

7 | SR | NSEE | 8.EE.C.8 | Determine the number of solutions to a system of equations. | | 1 | 75% | 40% | 35 |

8 | SR | NSEE | 8.EE.A.1 | Apply the properties of negative integer bases and exponents to identify the signed values of expressions. | | 1 | 68% | 38% | 30 |

9 | SR | NSEE | 8.NS.A.1 | Match decimal expansions with their fraction equivalents. | | 1 | 62% | 49% | 13 |

10 | SR | NSEE | 8.EE.A.2 | Evaluate the cube root of a small perfect cube. | | 1 | 78% | 46% | 32 |

11 | SR | NSEE | 8.EE.B.5 | Determine which graph represents a proportional relationship in a real-world context. | | 1 | 91% | 74% | 17 |

12 | SR | GE | 8.G.B.7 | Use the Pythagorean theorem to find the missing side length of a right triangle in a real-world problem. | | 1 | 61% | 53% | 8 |

13 | CR | SP | 8.SP.A.1 | Given a scatter plot, determine if there are outliers in the data, describe the association represented by the data, and make a prediction based on the data. | | 4 | 88% | 70% | 18 |

14 | SR | GE | 8.G.B.6 | Given the lengths of two sides of a right triangle, determine the possible length of the third side by using the Pythagorean Theorem. | | 1 | 41% | 27% | 14 |

15 | SA | NSEE | 8.EE.C.8 | Create two linear equations, each involving the same two variables, to solve a real-world problem. | | 1 | 81% | 48% | 33 |

16 | SA | GE | 8.G.A.1 | Determine the length of a line segment after a series of transformations. | | 1 | 83% | 65% | 18 |

17 | SA | GE | 8.G.B.8 | Use the Pythagorean Theorem to create an equation to represent the length of a line segment that is graphed on a coordinate plane. | | 1 | 81% | 45% | 36 |

18 | SR | GE | 8.G.A.5 | Determine the angle measures of a triangle that is congruent to a given triangle. | | 1 | 77% | 43% | 34 |

19 | SR | FN | 8.F.A.3 | Interpret the equation y=mx+b, and decide whether given functions are linear or not linear. | | 2 | 66% | 48% | 18 |

20 | SR | GE | 8.G.A.3 | Determine the coordinates of the image of a vertex of a quadrilateral after it has been rotated about the origin. | | 1 | 78% | 63% | 15 |

21 | SR | NSEE | 8.NS.A.2 | Determine between which pair of integers the square root of a given number lies. | | 1 | 73% | 72% | 1 |

22 | SA | SP | 8.SP.A.3 | Use the equation of a linear model derived from data to solve a real-world problem. | | 1 | 85% | 58% | 27 |

23 | CR | NSEE | 8.EE.A.1 | Use the properties of exponents to find equivalent expressions. | | 4 | 76% | 44% | 32 |

24 | SR | NSEE | 8.NS.A.1 | Identify an irrational number from a list of numbers. | | 1 | 57% | 59% | -2 |

25 | SR | NSEE | 8.EE.C.8 | Determine the coordinates of the solution of a system of equations. | | 1 | 89% | 54% | 35 |

26 | SR | NSEE | 8.EE.A.1 | Use the properties of exponents to identify equivalent expressions. | | 1 | 72% | 30% | 42 |

27 | SR | NSEE | 8.EE.B.5 | Interpret a proportional relationship on a graph, and identify and interpret the slope of the graph. | | 1 | 64% | 51% | 13 |

28 | SR | NSEE | 8.EE.A.2 | Classify radical expressions as rational or irrational numbers. | | 1 | 51% | 38% | 13 |

29 | SA | GE | 8.G.A.1 | Determine the effects of a translation and a rotation on the angles and sides of a quadrilateral. | | 2 | 89% | 66% | 23 |

30 | SR | NSEE | 8.NS.A.1 | Identify rational numbers from a list of radical expressions. | | 1 | 75% | 52% | 23 |

31 | SR | FN | 8.F.B.4 | Use the linear relationship represented in a table of values to solve a real-world problem that involves determining the y-value for a given x-value. | | 1 | 90% | 70% | 20 |

32 | SR | SP | 8.SP.A.3 | Use the equation of a linear model derived from data to solve a real-world problem. | | 1 | 84% | 70% | 14 |

33 | SR | SP | 8.SP.A.2 | Justify why a line drawn through data on a scatter plot is suitable as a line of best fit. | | 1 | 58% | 48% | 10 |

34 | SR | FN | 8.F.B.4 | Given a real-world context, interpret the rate of change from an equation. | | 1 | 83% | 65% | 18 |

35 | CR | GE | 8.G.A.1 | Given a polygon and its image after a transformation, verify congruence by analyzing properties of both polygons; describe a series of transformations that would result in the same image of the polygon. | | 4 | 45% | 36% | 9 |

36 | SA | FN | 8.F.A.1 | Given a set of points on a coordinate plane, determine which point should be removed in order to create a function. | | 1 | 67% | 43% | 24 |

37 | SR | FN | 8.F.A.1 | Determine which set of coordinate pairs represents a function. | | 1 | 84% | 60% | 24 |

38 | SR | FN | 8.F.A.2 | Compare properties of two functions represented algebraically and in a table, and interpret each function's rate of change and initial value. | | 1 | 80% | 67% | 13 |

39 | SA | GE | 8.G.C.9 | Find the volume of a sphere given its radius. | | 1 | 63% | 35% | 28 |

40 | SR | GE | 8.G.A.4 | Given several transformations of a figure, determine whether the image created by each transformation is congruent or similar but not congruent to the original figure. | | 1 | 60% | 38% | 22 |