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Abduh M, Waluya S, Mariani S. Analysis of Problem Solving on IDEAL Problem Solving Learning Based on Van Hiele Theory Assisted by Geogebra on Geometry. UJMER [Internet]. 23Dec.2020 [cited 24Apr.2024];9(2):170-8. Available from: https://journal.unnes.ac.id/sju/ujmer/article/view/33198