教材是很好的教学素材,理解教材是有效教学的重要前提。任何事物都不是十全十美的,教材也存在着一些不足之处,而这些不足也影响着教师的教和学生的学。现谈谈本人对人教版三年级上册教材的几点疑惑:疑惑一:时间计算要不要规范格式?在学习完第五单元“时分秒”中的“时间的计算”一课时后,对经过时间的计算的算式让我有点迷惑。教学时,我是按照教材和教师用书的要求教学的。教 Teaching material is a good teaching material, understanding the teaching material is an important prerequisite for effective teaching. Everything is not perfect, there are some shortcomings in teaching materials, and these deficiencies also affect the teaching of teachers and students learn. Now I talk about the People’s Education Publishing House on the third grade volumes of textbooks on the doubts: doubts one: time to calculate whether to standardize the format? After learning the fifth unit “hours and seconds ” “time calculation ” a lesson After the calculation of the passage of time to make me a little confused. When teaching, I teach in accordance with the requirements of teaching materials and teacher’s books. teach