Study involved head start programs and state funded public preschools from both California and New York. The study consist of a pre and post-test. A curriculum was given to the teachers to assist with planning for group activities in school and a manuel with activities that can be done at home. The curriculum includes counting and numbers, arithmetic operations, geometry, patterns, and reasoning. Data was collected twice during the year, once in the fall then again in the spring. The study found significant differences between the control and the intervention group.