titita deelack, & เจริญวิชญ์ สมพงษ์ธรรม. (2021). Study of learning outcomes of Science and Technology Department Organ System in our body unit for Mathayomsuksa 2 by using a series of activities in Quality Elementary Science Teaching (5Es). JOURNAL MAHA CHULA TANI MAHACHULALONGKORNRAJAVIDYALAYA UNIVERSITY, 3(5), 17–23. retrieved from https://so02.tci-thaijo.org/index.php/mcupnpbcr/article/view/249939