Today's educators must use research-based teaching strategies that increase achievement levels of students. Howard Gardner's Theory of Multiple Intelligences is scientifically-based. The current model suggests eight different areas in which a person can demonstrate intelligence. This study compared reading and math assessments score of elementary students in classrooms using primarily traditional teaching strategies with classrooms using primarily multiple intelligence strategies mixed with traditional teaching strategies. Student assessment scores improved in both reading and math regardless of the chosen teaching strategy on most of the assessments. Some showed a significant difference but in favor of the classrooms using primarily traditional teaching strategies. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]