基于UbD理论的分式单元教学研究

Research on Fractional Unit Teaching Based on UbD Theory

摘要: 单元教学设计对于教师把握教学整体性，促进数学课堂教学转型，落实数学学科核心素养具有重要意义。UbD理论作为一种“理解优先”的教学模式，则是在单元教学整体设计中对其进行理论与框架支撑。而“分式”单元作为初中数学课堂的难点，更是需要教师在单元教学设计中重点加以研究。笔者通过理解大概念、掌握六个侧面、提出基本问题、预测评估与反馈以及结合“WHERETO”原则对基于UbD理论的分式单元进行逆向教学研究。

Abstract: Unit teaching design is of great significance for teachers to grasp the integrity of teaching, promote the transformation of mathematics classroom teaching and implement the core quality of mathematics subject. As a teaching mode of “Understanding first”, UbD theory supports the whole design of unit teaching theoretically and in a frame. As the difficulty of mathematics class in junior middle school, “Fraction” unit needs teachers to study it in the unit teaching design. By understanding the concept, mastering the six aspects, putting forward the basic problems, predicting, evaluating and feedback, and combining with the principle of “WHERETO”, the author studies the reverse teaching of fractional units based on UbD theory.