Unit 15 Assessment in English Teaching(简2)课件.ppt

Unit 13 Assessment in Language Teaching;Teaching Objectives;Who concernes about assessment ?;Positive assessment;Other ways to gather information:;A: Objective standard of ability level; D: Difficult to design, especially for classroom teachers.;IV. Assessment principles;V. Testing in assessment;Tests Tests － 测试的分类;TYPES OF TESTS;Types of test items;5.3.1 Multiple-choice items Multiple-choice test items are designed to elicit(引出)specific responses from the students. Since there is only one right answer, the scorer can very rapidly mark an item as correct or incorrect. More important, when a group of scorers is reading the same test paper, each of them arrives at the same score. (This agreement is called scorer reliability信度.) ;The reliability of multiple-choice items and the increased use of electronic computers have led to widespread acceptance of the machine-scored answer sheet. Such multiple-choice tests have proliferated throughout the United States and have been applied to a broad range of subject matter. The items present the students with four or five options from which they must select the correct answer. ;Although the scorer reliability of these machine- scored multiple-choice tests is almost perfect , the validity of each test or each section of the test must be determined separately. Just because a test is “objective,” it is not automatically a “good” test. Before using any standardized objective test, the teacher should carefully go over the specifications to determine whether they correspond to his or her own reasons for giving the test. ; 5.3.2 Short-answer objective items An objective test item is any item for which there is a single predictable correct answer. Whereas the multiple-choice item format is most often selected for standardized tests, the classroom teacher typically makes heavy use of short-answer items. These items may require one-word answers, such as brief responses to questions (oral or written), or the fil