Dear Author(s) Starts from December 2019, Kalamatika: Jurnal Pendidikan Matematika will using English as main language for all it's bussinesses. New template and guidelines have been provided as seen on the web homepage (it can be seen on bar menu on the right hand of your display). Please do read and apply all new policies before you submit your manuscript. Wise regards, Krisna Satrio Perbowo Editor-In-Chief