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Aprinastuti, C. and Anggadewi, B. E. T. and Suharno, R. and Wiyantari, W. (2020) Development of mathematics manipulative for slow learner and dyscalculia student in elementary school by using Montessori's characteristic. Journal of Physics: Conference Series, 1663. pp. 1-6. ISSN 1663 012065