Items where Author is "Siahaan, Sahat"

Perangin-angin, Ratu Natalia and Siahaan, Sahat (2017) Efforts to Improve Understanding and Use Concept of Additive Fractions and Reduction Using Media Comics on Model Cooperative Learning Type Student Team Achievement Division (STAD). In: Proceedings of The 2nd Annual International Seminar on Transformative Education and Educational Leadership (AISTEEL 2017), October 16-17, 2017, Medan City, North Sumatera, Indonesia.