The Research and Development of Computerized Multiple-choice and Open-ended Items for ”Circumference” Unit of the Sixth Grade Mathematics

[[abstract]]Testing and Assessment have played an important role in the whole teaching process.It allows the teacher to understand what extent that students understand the learning content to grasp the situation of students.It’s can also allow teachers to adjust their teaching methods and grasp the future, the focus of remedial instruction. However, after the implementation of assessment, teachers have to spend considerable time in the scoring and analysis on student misconceptions. Therefore, this study attempts to build a test that combination of Bayesian networks and possessed multiple-choice and open-ended items. It test by computerized diagnostic, and use the computer records of students in problem solving processes in detail.Systems analysis and diagnosis by the students answer response. Students learned more diversified as the error pattern and problem-solving strategies. It hopes to reduce the burden on the teacher marking. The results are summarized as follows： 1. In this study, the "circumference"unit computerized open-ended items can diagnose a wider variety of students to learn the error pattern then only a multiple-choice question. It is favorable to the teachers grasp student misconceptions. And then conduct remedial teaching. 2.The recognition rate of open-ended items of the computerized test questions automated analysis and diagnosis system which this study builded is 97.58％. The performance is excellent. 3.The Bayesian network which is combined the multiple-choice with the solving responses of open-ended items is better than the traditional Bayesian network