Al Qadar M, Firdaus M. Analysis of the Difficulties of Class VIII Students of Private Middle School PAB 1 Klumpang in Solving Story Problems Arithmetic Sequences and Series. EJR [Internet]. 2023Jan.9 [cited 2025Aug.2];2(1):14-8. Available from: https://jurnal.larisma.or.id/index.php/EJR/article/view/288