Kabel, M., Hwang, J. and Hwang, J. (2021) “Lessons Learned From a Rural Classroom Study: Transitioning From Concrete to Virtual Manipulatives to Teach Math Fact Fluency to Students With Learning Disabilities”, Journal of Curriculum Studies Research, 3(1), pp. 42-68. doi: 10.46303/jcsr.2021.7.