This action research study investigated the use of cooperative learning strategies in a 5th grade classroom. Both qualitative and quantitative data were collected and analyzed using a mixed-methods design. The study found that cooperative learning strategies increased student motivation, achievement, and benefited all cultural subgroups equally. Specific cooperative learning structures used included jigsaw, group investigation, literature circles, and numbered heads together. Data analysis presented results for focus students and the whole class using descriptive statistics related to the cooperative learning intervention.