The CCSS is a set of standards released by the National GovernorsAssociation in 2010 and was adopted by 43 states (CommonCore, 2015). The standards describe what students should know and be able to do in each subject in each grade. They are designed to be academically rigorous, while attainable for students and practical for teachers to teach. The purpose of this study was to investigate and compare the impact of two strategies (Lesson Design with MSWord & OnlineTool) used for improving inservice teachers’ knowledge, skills and practices on CCSS. This study was implemented with master’s degree students (teachers) who enrolled in two graduate level courses in a southeastern university. All of the students who participated in the study were included as data source. The results of the study are beneficial to all teachers, districts, teacher education programs and preservice teachers. The study shows positive results that the course module, the activity and the online tool are effective.