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Friday, April 16, 2010

Career - Mathematics Section

Career - Mathematics 
The Mathematics section of the SAT is widely known as the Quantitative Section or Calculation Section. The mathematics section consists of three scored sections. There are two 25-minute sections and one 20-minute section, as follows:
One of the 25-minute sections is entirely multiple choice, with 20 questions.
The other 25-minute section contains 8 multiple choice questions and 10 grid-in questions. The 10 grid-in questions have no penalty for incorrect answers because the student guessing isn't limited.
The 20-minute section is all multiple choice, with 16 questions.

Notably, the SAT has done away with quantitative comparison questions on the math section, leaving only questions with symbolic or numerical answers. Since the quantitative comparison questions were well-known for their deceptive nature—often turning on the student's recognition of a single exception to a rule or pattern—this choice has been equated to a philosophical shift away from "trickery" and toward "straight math" on the SAT[citation needed]. Also, many test experts[who?] have attributed this change, like the addition of the new writing section, to an attempt to make the SAT more like the ACT.

 New topics include Algebra II and scatter plots. These recent changes have resulted in a shorter, more quantitative exam requiring higher level mathematics courses relative to the previous exam.

Calculator Use

With the recent changes to the content of the SAT math section, the need to save time while maintaining accuracy of calculations has led some to use calculator programs during the test. These programs allow students to complete problems faster than would normally be possible when making calculations manually.

The use of a graphing calculator is sometimes preferred, especially for geometry problems and questions involving multiple calculations. According to research conducted by the CollegeBoard, performance on the math sections of the exam is associated with the extent of calculator use, with those using calculators on about a third to a half of the items averaging higher scores than those using calculators less frequently . The use of a graphing calculator in mathematics courses, and also becoming familiar with the calculator outside of the classroom, is known to have a positive effect on the performance of students using a graphing calculator during the exam.

Career Writing

The writing section of the SAT, based on but not directly comparable to the old SAT II subject test in writing, includes multiple choice questions and a brief essay. The essay subscore contributes about 30% towards the total writing score, with the multiple choice questions contributing 70%. This section was implemented in March 2005 following complaints from colleges about the lack of uniform examples of a student's writing ability.

The multiple choice questions include error identification questions, sentence improvement questions, and paragraph improvement questions. Error identification and sentence improvement questions test the student's knowledge of grammar, presenting an awkward or grammatically incorrect sentence; in the error identification section, the student must locate the word producing the source of the error or indicate that the sentence has no error, while the sentence improvement section requires the student to select an acceptable fix to the awkward sentence. The paragraph improvement questions test the student's understanding of logical organization of ideas, presenting a poorly written student essay and asking a series of questions as to what changes might be made to best improve it.

The essay section, which is always administered as the first section of the test, is 25 minutes long. All essays must be in response to a given prompt. The prompts are broad and often philosophical and are designed to be accessible to students regardless of their educational and social backgrounds. For instance, test takers may be asked to expound on such ideas as their opinion on the value of work in human life or whether technological change also carries negative consequences to those who benefit from it. No particular essay structure is required, and the College Board accepts examples "taken from [the student's] reading, studies, experience, or observations." Two trained readers assign each essay a score between 1 and 6, where a score of 0 is reserved for essays that are blank, off-topic, non-English, not written with a Number 2 pencil, or considered illegible after several attempts at reading. The scores are summed to produce a final score from 2 to 12 (or 0). If the two readers' scores differ by more than one point, then a senior third reader decides. The average time each reader/grader spends on each essay is less than 3 minutes.

Despite the College Board's claims that the SAT Essay is a nonbiased assessment of a student's writing ability, many different claims of bias have surfaced, including claims that readers give higher points to those who write in cursive, writers who write about personal experiences are less likely to get higher scores, and that topics favor the higher social classes.[citation needed] The College Board strongly denies any forms of bias on all portions of the SAT Reasoning Exam.

In March 2004 Dr. Les Perelman analyzed 15 scored sample essays contained in the College Board's Score Write book and found that 90% of essays that contained more than 400 words got the highest score of 12 and that the essays with 100 words or fewer got the lowest grade of 1.
Style of questions

Most of the questions on the SAT, except for the essay and the grid-in math responses, are multiple choice; all multiple-choice questions have five answer choices, one of which is correct. The questions of each section of the same type are generally ordered by difficulty. However, an important exception exists: Questions that follow the long and short reading passages are organized chronologically, rather than by difficulty. Ten of the questions in one of the math sub-sections are not multiple choice. They instead require the test taker to bubble in a number in a four-column grid.

The questions are weighted equally. For each correct answer, one raw point is added. For each incorrect answer one-fourth of a point is deducted.[10] No points are deducted for incorrect math grid-in questions. This ensures that a student's mathematically expected gain from guessing is zero. The final score is derived from the raw score; the precise conversion chart varies between test administrations.

The SAT therefore recommends only making educated guesses, that is, when the test taker can eliminate at least one answer he or she thinks is wrong. Without eliminating any answers one's probability of answering correctly is 20%. Eliminating one wrong answer increases this probability to 25%; two, a 33.3% probability; three, a 50% probability of choosing the correct answer and thus earning the full point for the question.

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