“As one reads mathematics, one needs to have an active mind, asking questions, forming mental connections between the current topic and other ideas from other contexts, so as to develop a sense of the structure, not just familiarity with a particular tour through the structure.” NeedsMindIdeasTeachingParticularConnectionsAskingMathematicsStructureCurrentsActiveMathTopicsFamiliarityAsking QuestionsActive Minds Book:Three-Dimensional Geometry and Topology, Volume 1 Source: Three-Dimensional Geometry and Topology, Volume 1