Items where Author is "R, Warminton"

Daulay, Anggi Paramita and Armanto, Dian and R, Warminton (2017) Developing of Learning Material Based on Problem Based Learning to Increase Students‘ Mathematical Reasoning Ability and Self-Efficacy in Grade x SMA Negeri 1 Medan. 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.