Noviana W, Hadi W, Handayani I. THE EFFECTIVENESS OF GEOGEBRA-BASED VAN HIELE MODEL ON MATHEMATICAL DISPOSITION ASSESSED FROM EARLY MATHEMATICS ABILITY. Kalamatika J. Pendid. Mat. [Internet]. 2020Nov.30 [cited 2026Apr.4];5(2):167-80. Available from: https://kalamatika.matematika-uhamka.com/index.php/kmk/article/view/444