The main idea of the study is to establish the suitable remedy instructions program based on Bayesian Networks and the ability index of Quanity and Measurement on Grade 3. It can offer the real time remedy instructions by the mistaken types after taking the test online. It is time consuming to take the traditional paper test. According to the weakness, the program is designed to analyze the mistaken types and gives individual remedy instructions based on different talent. It can also reduce the teachers’ loading and improve the studying effective. There are four conclusions as below.
1. The designed question in the program can make the differentiation of the students’ ability index. 2. It is workable to diagnose the mistaken types of Quanity and Measurement index on Grade 3 by the program. 3. The test result online can feedback to the program, offer real time and suitable remedy instructions. 4. All of the students with different levels get obviously improvement by using the program.
