【小学中学教育精选】3.3

§3.3　幂函数INCLUDEPICTURE"左括.TIF"课时目标INCLUDEPICTURE"右括.TIF"　1.通过具体问题，了解幂函数的概念.2.从描点作图入手，画出y＝x，y＝x2，y＝x3