Mathematics The Mathematics Section of the HSPA assessment is divided into four content clusters. Each of these clusters reflects knowledge and skills specified in New Jersey’s Core Curriculum Content Standards. High School Proficiency Assessment (HSPA) Mathematics Clusters I. Number Sense, Concepts, and Applications A. Understand types of numbers, our numeration system, and the ways they are used and applied in real-world situations. B. Apply ratios, proportions, and percents in a variety of situations. II. Spatial Sense and Geometry A. Recognize, visualize, analyze, and apply geometric properties, relationships, and patterns in real-world and/or problem-solving contexts using models, manipulatives, or technology. B. Use coordinate geometry in problem-solving situations and apply the principles of congruence, similarity, and transformations. C. Apply the principles of measurement and geometry to solve problems involving direct and indirect measurement. III. Data Analysis, Probability, Statistics, and Discrete Mathematics A. Determine, interpret, and use probabilities of simple and compound events. B. Understand and interpret statistical distributions and apply to real-world situations. C. Collect, organize, represent, analyze, and interpret data. D. Apply the concepts and methods of discrete mathematics to model and explore a variety of practical situations. E. Use iterative and recursive patterns and processes to model a variety of practical situations and solve problems. IV. Patterns, Functions, and Algebra A. Recognize, create, and extend a variety of patterns and use inductive reasoning to understand and represent mathematical and other real-world phenomena. B. Use various types of functions to represent mathematical or real-world situations. C. Use algebraic concepts and processes to concisely express, analyze, and model realworld situations. 17 Types of Questions The multiple-choice (MC) questions on the HSPA Mathematics test assess higher-level cognitive processes than the questions in traditional multiple-choice tests. It will take you an average of between one and two minutes to answer each MC question. The answers are computer scored and have a weight of one point each. Open-ended (OE) questions require you to construct your own written or graphical responses and explain your responses. It will take approximately ten minutes to answer each OE question. Your responses are hand scored on a scale from 0 to 3. The general scoring guide on page 20 was created to help readers score open-ended questions consistently within a single test and across different forms of the test. This scoring guide is used by the trained readers who will score the Mathematics open-ended questions on the HSPA. The following table shows you how many multiple-choice and open-ended questions to expect. Question Type Number of Questions 11th Grade MC 40 OE 8 You will be provided with a Mathematics Reference Sheet that contains a ruler, geometric shapes, formulas, and other information you may find useful as you take the test. You will also be provided with a calculator to help you solve problems. 18 19 Scoring Guide for Mathematics Open-Ended (OE) Questions (Generic Rubric) 3-Point Response The response shows complete understanding of the problem’s essential mathematical concepts. The student executes procedures completely and gives relevant responses to all parts of the task. The response contains few minor errors, if any. The response contains a clear, effective explanation detailing how the problem was solved so that the reader does not need to infer how and why decisions were made. 2-Point Response The response shows nearly complete understanding of the problem’s essential mathematical concepts. The student executes nearly all procedures and gives relevant responses to most parts of the task. The response may have minor errors. The explanation detailing how the problem was solved may not be clear, causing the reader to make some inferences. 1-Point Response The response shows limited understanding of the problem’s essential mathematical concepts. The response and procedures may be incomplete and/or may contain major errors. An incomplete explanation of how the problem was solved may contribute to questions as to how and why decisions were made. 0-Point Response The response shows insufficient understanding of the problem’s essential mathematical concepts. The procedures, if any, contain major errors. There may be no explanation of the solution, or the reader may not be able to understand the explanation. The reader may not be able to understand how and why decisions were made. The generic rubric above is used as a guide to develop specific scoring guides or rubrics for each of the open-ended (OE) questions that appear on the New Jersey fourth-grade (ESPA), eighthgrade (GEPA), and eleventh-grade (HSPA) proficiency assessments in Mathematics. The generic rubric helps ensure that students are scored in the same way for the same demonstration of knowledge and skills regardless of the test question. 20 HSPA MATHEMATICS SAMPLE QUESTIONS Cluster I, Macro A cáåÇ=íÜÉ=äÉåÖíÜI=ïáÇíÜI=~åÇ=~êÉ~=çÑ=É~ÅÜ=çÑ íÜÉ=R=ëÜ~ÇÉÇ=êÉÅí~åÖäÉëK tÜ~í=áë=íÜÉ=íçí~ä=~êÉ~=êÉéêÉëÉåíÉÇ=Äó=íÜÉ=R êÉÅí~åÖäÉë\ eçï=Çç=óçì=íÜáåâ=íÜÉ=~êÉ~=çÑ=íÜÉ=R êÉÅí~åÖäÉë=Åçãé~êÉë=íç=íÜÉ=~êÉ~=çÑ=íÜÉ êÉÖáçå=ìåÇÉê=íÜÉ=ÅìêîÉ\=bñéä~áå=óçìê êÉ~ëçåáåÖK Rationale: Since each of the shaded rectangles has the same width of 2 units, you only need to read the height of each from the graph and then multiply the width and height to obtain the area. The height of the first rectangle is 100 units, so its area is 100 units * 2 units or 200 sq. units. The total area of the 5 rectangles is (100 * 2) + (90 * 2) + (75 * 2) + (50 * 2) + (20 * 2) = 670 sq. units. The answer for the third bullet may vary, but you must explain your reasoning. 21 Cluster I, Macro B OK qÜÉ=çêáÖáå~ä=íáÅâÉí=éêáÅÉ=çÑ=~=ëÜáêí=áë=AORKVVK aìêáåÖ=~=ÅäÉ~ê~åÅÉ=ë~äÉI=íÜáë=ëÜáêí=áë=êÉÇìÅÉÇ=Äó QMB=çÑ=íÜÉ=íáÅâÉí=éêáÅÉX=íÜÉå=ORB=çÑ=íÜÉ=êÉÇìÅÉÇ éêáÅÉ=áë=í~âÉå=çÑÑ=~í=íÜÉ=Å~ëÜ=êÉÖáëíÉêK oçìåÇÉÇ=íç=íÜÉ=åÉ~êÉëí=éÉååóI=ïÜ~í=áë=íÜÉ éêáÅÉ=é~áÇ=Äó=íÜÉ=ÅìëíçãÉê\ (Answer to first bullet: ANNKSV=or ANNKTMF tÜ~í=éêáÅÉ=ïçìäÇ=íÜÉ=ÅìëíçãÉê=Ü~îÉ=é~áÇ=áÑ íÜáë=ëÜáêí=ïÉêÉ=ëçäÇ=~í=~=çåÉJíáãÉ=êÉÇìÅíáçå çÑ=SRB=Ñêçã=íÜÉ=çêáÖáå~ä=éêáÅÉ\ tÜó=ÇáÇå í=íÜÉ=ëíçêÉ=ëáãéäó=ëÉää=íÜáë=ëÜáêí=~í SRB=çÑÑ=íÜÉ=çêáÖáå~ä=ëíáÅâÉê=éêáÅÉ\ Rationale: Amount of 40% discount: $25.99 * 0.40 = $10.396 ≈ $10.40 Price after 40% discount: $25.99 – $10.40 = $15.59 Amount of 25% discount: $15.59 * 0.25 = $3.897 ≈ $3.90 Price after 25% discount: $15.59 – $3.90 = $11.69 ($11.70 is acceptable if you round at the end instead of after each step.) By breaking up the 65% discount into 40% and 25% discounts, the store was able to sell the shirt at a higher price than it would have if the store sold the shirt at 65% off the original price. 22 Cluster II, Macro A PK cçê=~=ëÉïáåÖ=éêçàÉÅíI=q~åó~=Åìí=áëçëÅÉäÉë íêá~åÖäÉë=Ñêçã=~=ëíêáéÉÇ=éáÉÅÉ=çÑ=ã~íÉêá~ä ïÜÉêÉ=íÜÉ=ëíêáéÉë=~êÉ=é~ê~ääÉäK=qÜÉ=îÉêíÉñ ~åÖäÉ=çÑ=íÜÉ=áëçëÅÉäÉë=íêá~åÖäÉ=ï~ë=RMŒ=~åÇ BC =áë=é~ê~ääÉä=íç=íÜÉ=Ä~ëÉK cáåÇ=íÜÉ=ãÉ~ëìêÉ=çÑ=∠_`b=~ë=ëÜçïå=áå=íÜÉ Çá~Öê~ãK ^K ==RMÿ _K ==SRÿ j `K NNRÿ aK NPMÿ Rationale: Since the triangle is isosceles and the vertex angle is given to be 50°, the two remaining angles must be 65°. 180° = 50° + x + x; x = 65° The measure of ∠AGE is 180° since that is the measure of a straight line. Therefore, m∠ACB + m∠BCE = 180. Since BC and FG are parallel and AG intersects both BC and FG , m∠ACB = m∠AGF = 65. To solve for m∠BCE, use the following: 180 – m∠ACB = 180 – 65 = 115. 23 Cluster II, Macro B QK ^=Äç~í=ëí~êíë=~í=mçáåí=^I=íê~îÉäë=S=ãáäÉë=ÇìÉ É~ëí=íç=mçáåí=_I=~åÇ=íÜÉå=íìêåë=~åÇ=íê~îÉäë U=ãáäÉë=ÇìÉ=ëçìíÜ=íç=mçáåí=`=çå=íÜÉ=ëÜçêÉK • • • • lå=íÜÉ=ÖêáÇ=éêçîáÇÉÇ=áå=óçìê=~åëïÉê ÑçäÇÉêI=ÅçåëíêìÅí=~=ëÅ~äÉ=Çê~ïáåÖ=ìëáåÖ îÉÅíçêë=íç=ëÜçï=íÜÉ=Äç~í ë=ãçîÉãÉåíI ëí~êíáåÖ=Ñêçã=éçáåí=^K aê~ï=~=îÉÅíçê=íÜ~í=ïçìäÇ=ëÜçï=íÜÉ ÇáêÉÅí=é~íÜ=Ñêçã=éçáåí=^=íç=éçáåí=_K tÜ~í=ïçìäÇ=ÄÉ=íÜÉ=~ééêçñáã~íÉ=åìãÄÉê çÑ=ãáäÉë=íÜÉ=Äç~í=ÅçìäÇ=Ü~îÉ=íê~îÉäÉÇ ~äçåÖ=íÜáë=é~íÜ\ ^ééêçñáã~íÉäó=Üçï=ã~åó=ÇÉÖêÉÉë=Ñêçã kçêíÜ=ïçìäÇ=íÜáë=é~íÜ=ÄÉ\=bñéä~áå=Üçï óçì=~êêáîÉÇ=~í=óçìê=~åëïÉêK Rationale: If the boat travels 6 miles due east from Point A to Point B and then turns and travels 8 miles due south from Point B to Point C, the boat’s path forms a right angle. If you use straight lines to connect Point A to Point B, Point B to Point C, and Point C to Point A, the result is a right triangle. To find the length of AC , you apply the Pythagorean Theorem, 62 + 82 = c2. Solving for c yields c = 10. The measure of ∠C is approximately 37° since tan 37° ≈ 36.869 ≈ 24 6 . 8 Cluster II, Macro C RK aÉëÅêáÄÉ=áå=ÇÉí~áä=Üçï=óçì=ÅçìäÇ=ìëÉ=~ Å~äÅìä~íçê=ïáíÜ=íêáÖçåçãÉíêáÅ=ÑìåÅíáçåë=íç ÜÉäé=ÑáåÇ=íÜÉ=ÜÉáÖÜí=çÑ=óçìê=ëÅÜççä=ÄìáäÇáåÖ áÑ=óçì=âåÉï=íÜÉ=Çáëí~åÅÉ=Ñêçã=íÜÉ=Ä~ëÉ=çÑ íÜÉ=ÄìáäÇáåÖ=íç=íÜÉ=éçáåí=ïÜÉêÉ=óçì=ïÉêÉ ëí~åÇáåÖ=~åÇ=íÜÉ=~åÖäÉ=Ñêçã=íÜÉ=ÖêçìåÇ=~í óçìê=ÑÉÉí=íç=íÜÉ=íçé=çÑ=íÜÉ=ÄìáäÇáåÖK Rationale: If you know the distance d from the base of the building to Point A where you are standing and you know angle θ, which the ground makes with the hypothetical line from Point A to the top of the building, you can apply the formula tan θ = building. Solving for h results in h = d (tan θ). 25 h , where h is the height of the d Cluster III, Macro A SK tÉ~íÜÉêéÉêëçåë=éêÉÇáÅí=íçãçêêçï ë=ïÉ~íÜÉê Ä~ëÉÇ=çå=ïÜ~í=Ü~ë=Ü~ééÉåÉÇ=áå=íÜÉ=é~ëí=çå íÜÉ=Ç~óë=ÑçääçïáåÖ=Ç~óë=àìëí=äáâÉ=íçÇ~óK=aìêáåÖ íÜÉ=é~ëí=RM=óÉ~êëI=íÜÉêÉ=Ü~îÉ=ÄÉÉå=PUM=Ç~óë íÜ~í=Ü~îÉ=ÄÉÉå=àìëí=äáâÉ=íçÇ~óI=~åÇ=çÑ=íÜçëÉI OMM=Ü~îÉ=ÄÉÉå=ÑçääçïÉÇ=Äó=~=ÅäÉ~ê=Ç~óK=tÜáÅÜ çÑ=íÜÉ=ÑçääçïáåÖ=áë=íÜÉ=~ééêçñáã~íÉ=éêçÄ~Äáäáíó çÑ=~=ÅäÉ~ê=Ç~ó=íçãçêêçï=íÜ~í=ïçìäÇ=ÄÉ=ÖáîÉå=Äó ~=ïÉ~íÜÉêéÉêëçå=ìëáåÖ=íÜÉ=éêÉÇáÅíáçå=êìäÉ ÇÉëÅêáÄÉÇ=áå=íÜáë=éêçÄäÉã\ ^K NPB _K PQB j `K RPB aK SSB Rationale: Since there have been 200 days out of 380 days which were followed by a clear day, the 200 experimental probability of tomorrow being a clear day is ≈ 0.5263 ≈ 53%. 380 26 Cluster III, Macro B TK qÜÉ=Ç~í~=éêçîáÇÉÇ=ëÜçï=íÉëí=ëÅçêÉë=Ñçê=íïÉäîÉ=ëíìÇÉåíë=~åÇ=íÜÉ=åìãÄÉê=çÑ=Üçìêë=íÜÉó=ëíìÇáÉÇ=Ñçê=íÜÉ íÉëí=ÇìêáåÖ=íÜÉ=íÜêÉÉ=Ç~óë=éêáçê=íç=í~âáåÖ=áíK • lå=íÜÉ=ÖêáÇ=éêçîáÇÉÇ=áå=óçìê=~åëïÉê=ÑçäÇÉêI=ÅçåëíêìÅí=~=ëÅ~ííÉê=éäçí=çÑ=íÜáë=Ç~í~K • açÉë=íÜÉêÉ=~ééÉ~ê=íç=ÄÉ=~=êÉä~íáçåëÜáé=ÄÉíïÉÉå=~=ëíìÇÉåí ë=íÉëí=ëÅçêÉ=~åÇ=íÜÉ=íáãÉ=ëéÉåí ëíìÇóáåÖ\=rëÉ=íÜÉ=ëÅ~ííÉê=éäçí=íç=ëìééçêí=óçìê=~åëïÉêK • aç=~åó=çÑ=íÜÉ=éçáåíë=~ééÉ~ê=íç=ÄÉ=çìíäáÉêë\=bñéä~áåK Rationale: Student must draw a correct scatter plot of the data. For the most part, it looks as though a student’s test score improves with more time spent studying. Answers as to which points are outliers may vary, as long as your response shows a clear understanding of the definition of outliers and you support your answers. 27 Cluster III, Macro D Cluster III, Macro C UK qÜÉ=ÅÜ~êí=ÄÉäçï=ëÜçïë=íÜÉ=åìãÄÉêë=çÑ=ëíìÇÉåíë VK áå=~=ÜçãÉêççã=íÜ~í=îçíÉÇ=Ñçê=É~ÅÜ=ëíìÇÉåí ÅçìåÅáä=Å~åÇáÇ~íÉK qÜÉ=Çá~Öê~ã=~ÄçîÉ=êÉéêÉëÉåíë=~=åÉíïçêâ=çÑ ÇáêÉÅí=~áê=êçìíÉë=ÄÉíïÉÉå=ÅáíáÉëK=tÜáÅÜ=çÑ=íÜÉ ÑçääçïáåÖ=ã~íêáÅÉë=Å~å=êÉéêÉëÉåí=íÜÉ=åÉíïçêâ fÑ=íÜáë=Ç~í~=ïÉêÉ=Çê~ïå=áå=~=ÅáêÅäÉ=Öê~éÜI ~ÄçîÉ\=^=òÉêç=áåÇáÅ~íÉë=åç=ÇáêÉÅí=~áê=êçìíÉK=^=çåÉ ~ééêçñáã~íÉäó=Üçï=ã~åó=ÇÉÖêÉÉë=áå=íÜÉ=ÅÉåíê~ä êÉéêÉëÉåíë=íÜ~í=~=ÇáêÉÅí=~áê=êçìíÉ=ÉñáëíëK ~åÖäÉ=çÑ=íÜÉ=ëÉÅíçê=çÑ=íÜ~í=ÅáêÅäÉ=ïçìäÇ=êÉéêÉëÉåí qáâç ë=îçíÉë\ ^K OO _K SU j `K TV aK VM Rationale: Tiko received 7 votes out of the total 32 7 students who voted. ≈ 0.218 ≈ 0.22 = 22%. 32 Since there are 360° in a circle, 22% of 360° would be 79.2° or 79°. Rationale: Since there are line segments connecting A to B and B to C, there are 1’s in Row A for Column B and C corresponding to AB & BC . The rest of the matrix follows accordingly. 28 Since the number in Column C is always divisible by 3 and 32 is 1 less than 33 (which is divisible by 3), the number 32 appears in Column B. To find the row number, substitute the number 32 into the equation for Column B. 3n – 1 = 32 3n = 32 + 1 3n = 33 and n = 11 (the 11th row) Cluster IV, Macro A NNK fã~ÖáåÉ=íÜ~í=íÜÉ=í~ÄäÉ=ÄÉäçï=ÅçåíáåìÉëI=êçï ~ÑíÉê=êçïI=ÑçääçïáåÖ=íÜÉ=ë~ãÉ=é~ííÉêå=ÑçêÉîÉêK To find the column for 1783, divide by 3. Note that the answer is 594 with a remainder of 1. The remainder indicates that the number occurs in the first column (Column A) of the next row, which is Row 595. You can confirm your answer by using the formula for Column A: • • • • • • 3n - 2 = 1783 3n = 1783 + 2 3n = 1785 and n = 595 `çãéäÉíÉ=íÜÉ=SíÜ=~åÇ=TíÜ=êçïë=áå=óçìê ~åëïÉê=ÑçäÇÉêK tÜ~í=åìãÄÉêë=~êÉ=áå=íÜÉ=NMMíÜ=êçï\ têáíÉ=ÉñéêÉëëáçåë=Ñçê=íÜÉ=åìãÄÉêë=áå=íÜÉ n íÜ=êçïK få=ïÜáÅÜ=êçï=ïáää=íÜÉ=åìãÄÉê=PO=ÄÉ ÑçìåÇ\ få=ïÜáÅÜ=Åçäìãå=ïáää=íÜÉ=åìãÄÉê=PO=ÄÉ ÑçìåÇ\=bñéä~áå=óçìê=~åëïÉêK få=ïÜáÅÜ=Åçäìãå=ïáää=íÜÉ=åìãÄÉê=NTUP=be found? Explain your answer. Rationale: Column C is always 3 times the row number (that is, 3n) Column B is always 3 times the row number less 1 (that is, 3n – 1) Column A is always 3 times the row number less 2 (that is, 3n – 2) Therefore, Row 6: Row 7: Row 100 16, 17, 18 19, 20, 21 298, 299, 300 30 Cluster IV, Macro B NOK qÜÉ=Öê~éÜ=çÑ=~=ÑìåÅíáçåI=ÑExFI=áë=ÖáîÉå=ÄÉäçïK tÜáÅÜ=Öê~éÜ=ïçìäÇ=êÉéêÉëÉåí=ÑExF= =O\ Rationale: The graph of the function, f(x), is shown. So, f(x) – 2 is just the graph of f(x) translated 2 units in the negative y direction. 31 Cluster IV, Macro C NPK qÜÉ=éä~óÉêë=çå=~=Ä~ëâÉíÄ~ää=íÉ~ã=ëÅçêÉÇ TR=éçáåíë=áå=íÜÉ=Ñáå~ä=Ö~ãÉ=çÑ=íÜÉ=ëÉ~ëçåK aìêáåÖ=íÜ~í=Ö~ãÉI=íÜÉó=ã~ÇÉ=íïáÅÉ=~ë=ã~åó ÑáÉäÇ=Öç~äë=~ë=íÜÉó=ÇáÇ=ÑêÉÉ=íÜêçïëK=Eb~ÅÜ ÑáÉäÇ=Öç~ä=áë=ïçêíÜ=íïç=éçáåíëI=~åÇ=É~ÅÜ=ÑêÉÉ íÜêçï=áë=ïçêíÜ=çåÉ=éçáåíKF=eçï=ã~åó=éçáåíë ÇáÇ=íÜÉ=éä~óÉêë=çå=íÜ~í=íÉ~ã=ã~âÉ=çå=ÑêÉÉ íÜêçïë=ÇìêáåÖ=íÜÉ=Ö~ãÉ\ tÜáÅÜ=çÑ=íÜÉ=ÑçääçïáåÖ=Éèì~íáçåë=Å~ååçí=ÄÉ ìëÉÇ=íç=ëçäîÉ=íÜÉ=éêçÄäÉã=ÖáîÉå=~ÄçîÉ\ j ^K 2x H=x Z=TR _K OE2xF=H=x Z=TR `K 4x H=x Z=TR aK 5x Z=TR Rationale: 75 = 2x + x only accounts for the fact that the team made twice as many field goals as they did free throws. It doesn’t contain the additional stipulation that each field goal is worth two points while each free throw is worth only one point. All three of the other distractors simplify to 5x = 75, which is the correct equation. 32