个性化学习中的机助自适应测试系统设计

Design on computerized adaptive testing system in personalized learning

为实现"计算机原理"课程计算机辅助教学中的个性化学习和检验,提高学生的自学能力、创造精神和学习效率,在VB 6.0和Access 2003环境下,开发基于IRT模型"计算机原理"课程的自适应测试系统——CoCAT.整个系统分为3个模块:系统管理模块、试题管理模块和测试管理模块,它可根据学生特点自动选择合适的试题,并提供学生学习能力和学习效果等方面的分析报告,可以更真实地反映学习者的学习水平和特点,有利于学生自学习和自检验.与传统的考试方式相比,具有效率高、题目的选择和评分灵活等特点,测试结果能更精确地反映被试者的实际水平,更适合在网络教育尤其是个性化学习中应用.

To achieve the self-study and self-testing in the computerized aided teaching of ＂Computer Organization＂ course, a ＂Computer Organization＂ Computerized Adaptive Testing （CAT） system-CoCAT, is developed based on the Item Response Theory （IRT） model. The system runs under VB 6.0 and Access 2003, and is designed to improve learners＇ self-study ability, creative spirit and study efficiency. CoCAT is composed of 3 modules： system management, test question management and testing module. During the testing, it can automatically select test questions according to the testee＇ s ability. After the testing, it can give a report about the testee＇ s learning ability and study effect. So it can really reflect the learner＇ s study level and characteristics, help to make self-study and self-testing. Compared with the traditional ways of exam, CAT has the characteristics such as high efficiency and flexible test question selec- tion and marking. Its testing results can reflect the actual level of the learner. Therefore, it is suitable for E-learning, especially in the personalized learning system.