Call for Paper Kalamatika: Jurnal Pendidikan Matematika is an academic journal published online and print twice a year, April and November, by Universitas Muhammadiyah Prof. Dr. HAMKA (UHAMKA) in cooperation with Indonesian Mathematics Educators (IMES). This journal focus in mathematics education and disciplined inquiry into the teaching and learning of mathematics. The scope of journal are (but not limited):- Mathematics Education- Realistic Mathematics Education- Design Research- Research and Development- Higher Order Thinking in Mathematics Ability- Learning Media for Mathematics Classroom- Manipulative Tools- Experimental Study Kalamatika: Jurnal Pendidikan Matematika is indexed by Directory of Open Access Journals (DOAJ), Science and Technology Index (SINTA), Garda Rujukan Digital (GARUDA), Microsoft Academic, One Search by Perpusnas, Google Scholar, Index Copernicus International (ICI), and Dimensions. Volume 6 No 2 2021, Submission Deadline: August 30th, 2021. For further information please visit: http://kalamatika.matematika-uhamka.com/index.php/kmk/ Contact Person: Windia (+6289601937499 for Indonesia) Krisna (+447514681825 for International)