Figure 6. Percentage of Pretest Value and Posttest Understanding of Mathematical Concept Ability in Trial I

From

Development of Teaching Materials Based on a Metacognition Approach to Improve the Understanding Ability of Mathematical Concepts of Students of Budi Mulia Medan

Mahdalena Elma Sari, M. Amin Fauzi, Faiz Ahyaningsih

American Journal of Educational Research. 2019, 7(1), 24-32 doi:10.12691/education-7-1-5