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This article examines the differential effects of three different instructional approaches on math computation and problem-solving skills. The article shows how technology applications such as 3D printers can be integrated with math curriculum. The quasi-experimental study was conducted with 90 middle school students with and without math learning disabilities in six public schools. The results revealed that both of experimental groups were significantly effective for improving math problem-solving skills. In addition, one experimental group with the use of technology applications was significantly effective for improving math computation skills and spatial skills, while the other experimental group with hands-on projects and a control group were not. This article also explains interaction effects of treatment conditions, instructional settings, and disability status.