Wright-Map to investigate the actual abilities on math test of elementary students

The evaluation of learning outcomes, especially class promotion tests, is high possibility vulnerable to biases that cause students ability to be described inappropriately. Our study proposes to investigate students abilities based on math test in elementary school. This study involved 31 elementary school students. We used Wright-Map on Rasch modelling as an objective way to measuring students actual abilities. Data were collected based on mathematical tests on basic arithmetic, fractional and geometry. Based on Wright-Map found 11 students who have above average mathematical ability. In contrast, 13 other students had below average math skills. Unfortunately, there are 7 students who cannot be measured mathematical ability because of Outfit exposed. The other facts, overall students have difficulties in fractional matter in comparative and scale problems, but students have no difficulty in operations to change fractions to form percent and decimal. The comparison of mathematical ability between male and female students is also an interesting issue that we reviewed in this article. By using Wright-Map the student’s actual ability can be drawn up accurately. It is very powerful for classroom teachers to learn student’s qualification in classroom promotion and/or student grade ratings in mathematics materials.