This article describes an online course, which was created for engaging in-service teachers in pedagogies and technologies associated with creativity, innovation, and invention; using a variety of technologies in a safe, open, and playful atmosphere to help practicing teachers develop their own creativity; and providing tools for the development of creativity in their own students. Data from this self-assessment were analyzed to measure whether the course activities increased participants’ scores for overall creativity and for eight components of creativity. The results indicated that participants did make a significant overall gain in creativity and in the component areas of Abstraction, Connection, Perspective, and Boldness.