Teaching content: Page P28~ 19, Examples 5 and 6, "Do one thing", Exercise 7.
Example 5 focuses on the Tang Priests and Mentors in The Journey to the West who are interested in students, and teaches "0 divided by any number that is not 0 will get 0" with the vivid story of "Pig Eight Rings Eating Watermelon" as the background. Guide the students to write 0÷3=0 through the story and understand the meaning. Example 6 takes the household electricity consumption of two students as materials, presents information and required questions in tabular form, and leads to "dividing the middle and end of quotient by 0". There are two problems. There is a division of 0 in the middle of the first teacher, which means that when the number on the dividend is 0 (and there is no remainder in front), the quotient on this bit is 0, and 0 acts as a placeholder. The second problem is the division of the zero at the end of the teacher.
Second, teaching objectives (knowledge and skills, processes and methods, emotional attitudes and values).
Knowledge and skills: (1) enable students to master the inspection method of division and form the habit of inspection; (2) Make students use division to further solve problems and cultivate their ability to analyze and solve problems.
Process and method: By creating situations, let students realize that some calculations are often checked in real life.
Emotional attitude and values: cultivate students' correct thinking quality and serious study habits.
Thirdly, the analysis of learners' characteristics
Students have learned the general calculation method of dividing a digit by three digits, and have also encountered the situation that there is a zero at the end of the dividend in oral calculation. Through the teaching of Example 5, students can master the knowledge point that "0 is divisible by any number that is not 0", which provides convenience for solving today's problems. When students divide the dividend by 0, it may be difficult to write a 0 to occupy a position, so we should focus on solving it.