Abstract
A multiple baseline design was used to assess the intervention of individual tutoring to help two learning-disabled students (15 and 16 years old) improve their multiplication of 1 -digit numbers over nine days of 10-min. instruction. Observation or visual analysis indicated 40 to 50% improvement after the intervention, and a nonparametric test of randomization showed that the students' improvement was retained during the 2-wk. follow-up.
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