Saputro, Didik, Masrukan Masrukan, and Arief Agoestanto. “Mathematical Communication Ability by Grade VII Students Using a Themed Problem Based Learning With Scaffolding on Rectangle Materials”. Unnes Journal of Mathematics Education 6, no. 2 (August 31, 2017): 239-248. Accessed November 22, 2024. https://journal.unnes.ac.id/sju/ujme/article/view/17057.