This chapter focuses on effective preparation for civic reasoning, discourse, and problem solving. It reviews literatures, including major synthetic reviews and studies from the science of learning and development (SoLD), civics education, and mathematics education. Based on these reviews, the authors make the case for a more comprehensive form of civic education in which reasoning, discourse, and problem solving permeate the curriculum across grades and subject matter. As an example, the authors illustrate how mathematical tools and techniques inform powerful fact-based civic reasoning and discourse and how SoLD informs both. This approach to learning engages students in politically relevant issues in a nonpartisan way as they prepare to become democratic decision-makers and problem solvers of the future.