A Systematic Review of Evidence-Based Instruction for Developing Fraction Concepts of Autistic Students and Those with Intellectual and Developmental Disability

The purpose of this systematic review of literature was to synthesize research on instructional practices used to develop fraction concepts of autistic students and students with intellectual and developmental disability in elementary and secondary school grades. Fourteen articles, published between 2015 and 2023, met the inclusion criteria for this systematic review. Participants were represented from elementary through high school grades with the majority of them being in middle school grades. Majority of studies used either a type of video-based instruction or explicit instruction to teach fraction skills with both types of instruction resulting in effective learning outcomes among participants. The findings suggest the emerging evidence of effectiveness of instructional strategies to support the development of fraction concepts among students.