一、制订教学目标，明确重点难点根据大纳要求和本节课的内容，教学目标确定为：（１）使学生认识时间单位年、月、日；（２）知道各月的天数及平、闰年的区别，学会闰年的判断方法，帮助学生建立较长的时间观念；（３）培养学生观察、分析和推理的能力；（４）结合教材适... First, the formulation of teaching objectives, a clear key difficulties According to the requirements and the content of this lesson, teaching objectives identified as: (1) to enable students to know the time unit year, month and day; (2) to know the number of days each peace, Leap year differences, learn to judge leap year, to help students establish a longer time concept; (3) students to observe, analyze and reasoning ability;