Winda Putri Alyani Hulu and Dimas Gigih Damarsari (2025) “Improving Students’ Understanding of Substance Changes through the Use of Household Materials in Science Practicum at Private Junior High School”, Co-Catalyst: Journal of Science Education Research and Theories, 2(2), pp. 106–112. doi: 10.33830/cocatalyst.v2i2.12067.