Fathin, A.Z. , Gunawan, G., Untarti, R. , Kusuma, J.W. and Sugiastuti, S. 2023. EFFORTS TO IMPROVE CRITICAL THINKING SKILLS AND INTEREST IN LEARNING MATHEMATICS USING THE INTEGRATED NUMBER HEAD-TOGETHER PROBLEM-BASED LEARNING MODEL. International Journal of Economy, Education and Entrepreneurship (IJE3). 3, 3 (Dec. 2023), 702–713. DOI:https://doi.org/10.53067/ije3.v3i3.185.