A handbook designed for teachers to illustrate how to utilize journaling as an effective teaching practice in the mathematics classroom. This thesis was written to illuminate educators about the powerful research and proper strategies for implementing journaling in mathematics. The handbook provides three lesson plan samples using journaling in the mathematics classroom for grades 3-5, strategies and idea for implementing journaling in mathematics, and tips and activities for mathematical journaling. The goal of this handbook is to give teachers clarity, examples, guidance, and strategies on mathematical journaling.