Multimedia interactive courseware has gradually become the current trend in teaching, because it can provide more motivations. The effectiveness to facilitate learning performance is also revealed according to the latest researches. However, multimedia courseware must be adaptive to learners with different capabilities before the methodology can be maximized. This study developed concrete, semi-concrete, and abstract levels of multimedia courseware based on polynomial operations from K7 math unit in an attempt to investigate the learners' performance with low visual working memory capability on different types of multimedia courseware. Results indicate that only concrete courseware can effectively enhance performance of students with low visual-spatial capacity on polynomial operations learning. Findings of this study are intended to provide useful references for teachers to author multimedia courseware for learners with low visual working memory capability students in the hope that learning achievements can be facilitated when individualized learning and remedial instruction are being engaged.