This study found that self-reported preferred roles in peer discussions in introductory biology classrooms can be predicted by social identities and that barriers to participation in peer discussions may impact certain student groups more than others.

Educational technology requires a delivery mechanism to scale. One method that has not yet seen widespread use is the educational campaign: large-scale, short-term events focused on a specific educational topic, such as the Hour of Code campaign. These are designed to generate media coverage and lend themselves nicely to collaborative or competitive goals, thus potentially leveraging social effects and community excitement to increase engagement and reach students who otherwise would not participate. In this article, we present a case study of three such campaigns that we ran to encourage students to play an algebra game-DragonBox Adaptive: the Washington, Norway, and Minnesota Algebra Challenges. We provide several design recommendations for future campaigns based on our experience, including the effects of different incentive schemes, the insertion of "tests" to fast-forward students to levels of appropriate difficulty, and the strengths and weaknesses of campaigns as a method of collecting experimental data.

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Assessing the effectiveness of board game-based learning for enhancing problem-solving competency of lower secondary students.