研究期間：10208~10307;Our schools have been experiencing three overlapping waves of technology adoption since the mid-1980s: the personal computer lab wave, the online learning wave, and the digital classroom wave. The digital classroom in this proposal refers to a one-to-one digital classroom, in which a student uses at least one computing device with wireless capacity for learning. Because of the declining performance of Taiwanese students in international mathematics assessments, this proposal takes mathematics as an example for designing four learning strategies in digital classrooms, which, besides enhancing mathematics abilities, nurture students’ 21st century competences as well as affects. The four strategies are concept learning via discovery, concept consolidating (include procedural concepts) via game-based drill, complex mathematics problem solving via peer assessment, and problem posing via peer assessment. These strategies are expected will cultivate 21st century competences such as critical thinking, creative thinking, complex problem solving, group collaboration, and linguistic and communicative competence; and affects such as self-confidence, sense of achievement and ownership.