In this study, we investigated the validity of a stealth assessment of physics understanding in an educational game, as well as the effectiveness of different game-level delivery methods and various in-game supports on learning. Using a game called "Physics Playground," we randomly assigned 263 ninth- to eleventh-grade students into four…

In-game learning supports aim to help students solve game levels (i.e., game-related supports), and connect to underlying content (i.e., content-related and hybrid supports). Students with different levels of prior knowledge may have different needs for in-game supports. In this study, we designed a 2D physics game with game-related,…

We examined the use and effectiveness of an incentive system--one of the five elements of a theory-based motivational architecture in educational games that we proposed--in a computer-based physics game on students' learning and performance. The incentive system's purpose was to motivate students to access learning supports designed to facilitate…