The purpose of this study is to build a Computerized Adaptive Test System and a Remedial Instruction module conforming to SCORM 2004 and building upon dichotomous item ordering theory and polytomous item ordering theory. This study is taking random sampling from four classes of Primary School- Fifth Grade students to examine their performance in mathematical geometry by Computerized Adaptive Test. The testing item selection strategy of the Computerized Adaptive Test is formed by utilizing the sequencing structure of the Item Structure Theory and by combining with the SCORM 2004 Sequencing to accomplish the goal of decreasing testing items and shortening testing time. Furthermore, the study is also using the Teaching Material Editor tool “Reload Editor 2004 v1.3.2 Beta2_d” to develop the learning resource PIF which conforms to SCORM 2004, and import to the Sample Run-Time Environment_1.3.3, RTE, released by the ADL to do test which accomplishes learning resources sharing and reusability as well as standardization. The result of the study is as below. 1. The Computerized Adaptive Testing System which uses both dichotomous and polytomous testing item ordering structure as the adaptive condition will translate the capability index of the examiner into observable and scorable results for judging the performance of the examiner and approving the Computerized Adaptive System of this study complies with SCORM 2004. 2. The total testing items of the Computerized Adaptive Testing are 56 items, and the average testing items are 35.6 which decrease 20.4 testing items in average. The result of the examination shows the Computerized Adaptive Testing System which combined with SCORM 2004, and using the base of the dichotomous and polytomous testing item structure, can decreasing testing items and shorten testing times. 3. The learning outcome of students has remarkable improvement after Computerized Remedy Teaching Instruction. 4. The learning resources – PIF, which comply with SCORM 2004, performing under ADL Sample RTE can reach sharing, reusability and standardization.
