The Journal of Special Education Apprenticeship


Increasingly individuals with Intellectual Disability (ID) are showing the capability of learning abstract mathematical skills like algebra. The purpose of the study was to show a method for teaching high school-aged individuals with ID the algebra skill of creating an equation from a line using a time-delay strategy and equation template. We employed a non-concurrent multiple probe across participants design with four participants who showed an increase in performance after the intervention. All participants showed improvements with a percentage of a nonoverlapping data effect size of 86.84%. The study supplied more evidence that the use of time delay approaches can help individuals with ID make progress within the general education high school curriculum.