American children continue to be less physically active than they were a decade ago. Web-based programs (e-Learning), requiring minimal teacher training and expertise, could contribute to improvements in children's health-related knowledge, attitudes and behaviors. The purpose of this study was to evaluate the impact of the e-Learning module Healthy Hearts 4 Kids (HH) on the physical activity knowledge, attitudes and behaviors of 233 fifth grade children. A 2x3 repeated measures design was employed and significant changes in knowledge and attitude were found upon completion of the module and also six weeks after the post-test was completed. Results of this study suggest HH could be an effective component of a coordinated school health program (CSHP). (Contains 1 table and 3 figures.)