Items by "Waruwu, Wes"

Waruwu, Wes and Simanjorang, Mangaratua and Mulyono, Mulyono (2022) Development of Learning Devices Based on Problem Based Learning Models in Improving Student’s Concept Understanding Ability in 1 Sintahuis Junior High School. In: Proceedings of the 7th Annual International Seminar on Transformative Education and Educational Leadership, AISTEEL 2022, 20 September 2022, Medan, North Sumatera Province, Indonesia.