• The Journal of Special Children Education
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• v.21 no.1
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• pp.271-297
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• 2019

Purpose: The purpose of this study was to examine the effects of a multi-strategy intervention program on addition of multi-digits with regrouping for high school students with intellectual disabilities (ID) attending a special school. Method: The multi-strategy program consisted of various intervention strategies with consideration of diverse characteristics of students with ID. In this study, A-B design was used to investigate the effects of the program for three students with ID. Results & Conclusion: The results indicated that the multi-strategy program was effective for increasing the rate of correct responses on the (two-digit number) + (one-digit number) questions with regrouping among high school students with ID. Also the multi-strategy intervention program was partially effective for the additions of multi-digits with bigger place value among the students with ID. Based on the results of this study, implications for practice and suggestions were discussed in details.