Al Abed A, Al Baba M. The Effect of Using Roger Bybee Model on Understanding Arithmetic Operations on Regular Fractions and Decimals for sixth Graders . Edu [Internet]. 2020 Jun. 1 [cited 2024 Jul. 7];47(2):1-18. Available from: http://dsr.ju.edu.jo/djournals/index.php/Edu/article/view/2163