The purpose of this research is to develop mathematics multiple assessments based on Bayesian networks in the unit of mathematical operations of integer. A half of the students took the multiple choice question(MCQ) computerized test and the other students took the computerized test included the constructed-response items. After students finished the performance assessments by Paper & Pencil and the computerized test, we got data from students’ answers and explored the effect of this application. The major findings of this study are as follows: 1.When students computed the value of an expression, the order of operations were used. In this research, “(multiplication & division) and (add & subtract) are grouped must be completed from left to right”、“do everything in parentheses first” were better used than “Division and multiplication must be completed before addition and subtraction.” . 2.Computerized test included the constructed-response items could gather more wrong type than MCQ. 3.In this research, students thought the mathematics multiple assessments could promote their mathematical skill and learning. 4.According to the results of the questionnaire, most teachers affirmed the advantages of mathematics multiple assessments, however there are still some kinds of differculties that they might encounter.
