The authors' primary aim was to investigate a potential causal relationship between spatial ability and math ability. To do so, they used a pretest-training-posttest experimental design in which children received short-term spatial training and were tested on problem solving in math. They focused on first and second graders because earlier studies…

Based on a mixed methods research design that included an examination of the impact of summer, case study analyses, and survey findings, English learners appear to have an advantage over their non-English learner peers in resisting summer loss and developing social competence. This study examined the effect of summer vacation on the oral reading…