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Abstract

Mathematics is a field of study that supports developmental science, knowledge and technology, but learning in the classroom is still monotonous and has not attracted the attention of students. So this study aims to develop and determine the quality of PALIAN teaching aids (Multiplication Board) based on Montessori. This study uses an R&D (Research and Development) approach with a development model by Borg and Gall with five stages, namely research and information gathering, planning, initial product development, initial field testing, and product revision. The subjects in this study were media experts, material experts, learning experts, teachers, and students. The quality of the PALIAN teaching aid (Multiplication Board) obtained from the validation results of media experts is 79.16 with the "Very Good" category. The material expert gave a score of 84.37 in the "Very Good" category. Learning experts gave a score of 82.82 with the category "Very Good". The teacher gave a score of 93.76 with the category "Very Good". And students gave a score of 90 with the category "Very Good". Overall, the assessment score given is in the "Very Good" category. These results indicate that the PALIAN teaching aid (Multiplication Board) has a positive impact in helping students understand multiplication material.