数学课程标准把“核心素养”放在了一个首要位置,概括为数学抽象、逻辑推理、数学建模、运算能力、直观想象、数据分析六大核心素养.如何在高中数学课堂教学中充分发展学生的核心素养是我们面临的首要问题.本文通过《幂函数》一节课揭示“三教”理念在课堂中如何培养学生核心素养. Mathematics curriculum standard puts “core literacy” in a primary position and summarizes the six core qualities of mathematical abstraction, logical reasoning, mathematical modeling, computing ability, visual imagination and data analysis.How to take full advantage of high school mathematics classroom teaching To develop students ’core literacy is the primary problem we face.This paper reveals how the concept of “Three Teachings” cultivates students’ core literacy in the classroom through a class of “power function”.