Effectiveness of Collaborative Learning Model Based on Assessment in Dyscalculia Students

This research was conducted to find out "the effect of collaborative learning model based on assessment to the mathematical achievement of dyscalculia students." For that the researcher asked two research questions, that is: (1) how is the mathematical achievement of dyscalculia students before and after following the learning through a collaborative model based on assessment? (2) How is the the effect of collaborative learning model based on assessment to the mathematical achievement of dyscalculia students? The study was conducted on six dyscalculia students in one of the inclusive elementary schools providers in Bandung, Indonesia. The research is done with quasi experiment through time-series design. Data collection is done through pretest-posttest, each done four times in a series of implementation time. Data analysis technique using Wilcoxon Matched Pairs Test. The result of the research shows that the model of collaborative learning based on the assessment significantly gives positive change to the students' mathematics learning achievement of dyscalculia. It is shown by calculation of "J" smaller than table of "J" based on the significance level chosen then the null hypothesis (Ha) is rejected, in other case the research hypothesis (Ha) is accepted. The implications of the results of the study have developed a guide that provides a complete framework for implementing collaborative learning-models based on assessment especially in mathematics learning for dyscalculia students.