Model essay 1: the concept of score in the mathematics teaching plan of the third grade in primary school last semester
Goal:
1. Understand the specific meaning of the score and establish the concept of the score.
2. Knowing the names of each part of the score, you can read and write a score of the score.
3. Cultivate students to correctly understand the concept of score in observation, analysis and hands-on operation.
Teaching emphasis: a little knowledge, a little reading and writing.
Teaching difficulties: understanding the specific meaning of a score and establishing a score. Preliminary concept.
The key to teaching is to let students understand the specific meanings of several parts and form appearances.
Preparation of teaching AIDS and learning tools: teacher preparation: courseware
Student preparation: thesis.
Teaching process:
First, create a situation
It is unfair to divide moon cakes, resulting in "average points"; It is unfair to divide a moon cake into two parts of different sizes and emphasize "average points" again; Divide a moon cake into two parts on average, and draw out the "half", which can't be expressed by the numbers learned before. Draw out the topic and write it on the blackboard.
Second, explore new knowledge.
(1) Understand the meaning of 1/2, read and write.
(2) Understand the meaning of 1/3.
(3) Summarize the meaning of the score and describe a score.
(D) origami game, the significance of supplementary scores.
(5) Introduce the concept of score.
(six) the names of the scores of the self-taught examinations in each part and the reports to the students.
Third, consolidate exercises (games)
The first level: check the reading method of music score.
The second level: look at the picture and write the score, and say the reason.
Level 3: Can you judge whether the colored part can be expressed by a fraction?
Fourth, the class summary
What did you gain from this class?
Fifth, expand sublimation.
The application of scores in life, taking the class size as an example, each student is a fraction of the class size, which cultivates students' sense of class honor.
Distribution of intransitive verbs
Would you please observe what other places in your life can be expressed by scores after class and tell your parents when you get home?
Mathematics teaching plan for the third grade of primary school last semester: Fan Wener: Wide Angle of Mathematics
Topic: Mathematical Wide Angle-Configuration Problem
Teaching content: Page 1 12 of the first volume of the third grade of People's Education Press, with examples and exercises in 1.
Teaching objectives:
1. Make students understand some simple collocation phenomena in life, and put forward different collocation schemes through observation, guess, experiment and other mathematical activities.
2. In the process of solving problems, the consciousness of symbolic thinking and orderly comprehensive thinking is infiltrated.
Teaching focus:
Explore independently, master orderly collocation methods, and solve practical problems with what you have learned.
Teaching difficulties:
How to match, can not be repeated, can not be omitted.
Teaching preparation:
courseware
Teaching process:
First, create a situation to reveal the topic.
Golden autumn is coming. A butterfly is busy on the grassland. What will it do?
It turned out to be a letter from a wise old man to woody cherry. Will Woody Sakura show us the contents of the letter?
Oh, it was the clever old man who invited her to the Math Castle!
Second, discuss cooperation and explore collocation methods.
1, guess.
Woody Sakura brought two tops and three bottoms. If she wants to wear it in different ways every day, she can wear it for several days without repeating it.
2. Think and discuss.
(1) Guiding ideology: How many different collocation methods are there for two tops and three bottoms? You can think about it, draw a picture, or even calculate it, and quickly record all kinds of wearing methods in the simplest way.
(2) think independently and try to express.
(3) Group communication: exchange your ideas in the group. Teachers patrol and participate in the activities of the guidance group.
3. Presentation Report: Which group reports now? what do you think? How was it recorded? Ask students with different representations to show the instructions on the physical projection, and other students will evaluate them.
The methods of presupposing students may include: (1) digital representation; (2) written statement; (3) Symbol or graphic representation: (4) Calculation.
Step 4 observe and compare
(1) We have shown so many representations just now. What do you think are their similarities?
Conclusion: After the discussion just now, we found that there are two ways to solve this problem: one is to order clothes first, and then match them with the bottom clothes. The first dress can be worn for three days, and the second dress can be worn for three days. A * * *, there are six matching methods; Another way is to order the bottom coat first, and then match the clothes. The first bottom coat can be matched with two clothes, the second bottom coat can also be matched with two clothes, and the third bottom coat can also be matched with two clothes. One * * * is also six collocation methods. It can be seen that we can think from different angles when solving problems. (Courseware demonstration)
(2) Just now, the students came up with so many methods of recording, which one do you like best? Why?
It seems that orderly connection and arrangement in a row can help us find out all the collocation methods, without repetition or omission. There is mathematics everywhere in life. As we just said, there is no omission, no repetition, no order-collocation in wearing clothes, which is a common mathematical problem in daily life.
Blackboard writing: collocation
5. Expansion and extension
(1) Can Woody Sakura wear different clothes every day if she wants to stay in Math Castle for a week? So what should we do?
(2) Please help her add a coat or a bottoming coat, think of several different ways to match, record them in your favorite way, and then communicate with your deskmate.
Let students with different methods report and let other students evaluate.
If the previous students didn't come up with the method of calculation formula, the teacher can guide them appropriately here, so that the capable students can feel it initially.
6. Perception improvement
If you bring four clothes and one * * *, how many ways can you match three? What if there are five clothes and four bottoms? Six clothes and six pants?
Third, comprehensive application to solve practical problems.
1, password gate
Packed up, Woody Sakura came to Math Castle. Alas, the door of Math Castle is a password door. It's her first time here and she doesn't know the password. What should I do?
At this time, the wise old man told her that the password is two digits, the ten digits are one of 2, 4 and 9, and the digits are one of 3, 6 and 8. What two numbers can the password be? Can you help Woody Sakura list everything?
Students try independently, report and evaluate, and the teacher writes on the blackboard. Guide students to draw two different orderly thinking methods: one is to set the number in the tenth place, and then match the number in the first place; Set the number in one place first, and then match the number in ten places.
2, the selected route
Woody Sakura entered the gate of the castle, and the wise old man asked her to go to the math paradise to find Congcong and Mingming. How many different roads did she take?
First, guide the students to understand the pictures. The students drew a picture on the book. Talk to each other in the group, discuss and communicate. Display report by name
Step 3: Take photos.
When Woody Sakura arrived at the Mathematics Paradise, she saw several children competing to take photos with Congcong and Mingming. Each of them must take photos with Congcong and Mingming alone. Woody Sakura's wand can shoot 65,438+00 times. Is that enough?
What if Woody Sakura also wants to take a photo with Congcong and Mingming?
4. Choose the mode of transportation
After taking the photos, Cong Cong and Ming Ming asked the children where they most wanted to go to college. What would you say if it were you?
Yes! Tsinghua of Peking University is a university that many students yearn for. I hope you can study hard and go to college there. Both Peking University and Tsinghua are in Beijing. How do we go from Yinchuan to Beijing? Show courseware.
Students discuss and exchange reports.
Fourth, summary.
What did you learn in this class?
Mathematics teaching plan for the third grade of primary school last semester: Fan Wensan: scores
course content
Textbook page 132 ~ 133, questions 4 ~ 7.
Teaching objectives
1. Make students know more about fractions and fractions, read and write fractions, know the names of fractions, and compare the sizes of two simple fractions.
2, can calculate simple ` fractional addition and subtraction.
Emphasis and difficulty in teaching
Read and write scores and compare the sizes of two simple scores. Calculate simple fractional addition and subtraction.
teaching process
First, reveal the topic.
Today, let's review the preliminary understanding of fractions in this class. Through review, I can further understand the score and the score, read and write the score, know the name of the score, compare the size of two simple scores, and skillfully calculate the addition and subtraction of simple scores.
Second, review a score and a score.
1, (1) Do the final review question 4.
(2) Talk about the meaning of each score.
(3) For example, name each part of the fraction and explain the meaning of numerator and denominator.
(4) Use scores to represent blank parts in the diagram.
2. Do the final review question 5.
(1) Students write in books. What does rice mean?
(2) Supplementary exercises:
7 decimeters is () meters; 56 decimeters is () meters.
6 cm is () meters; 28 centimeters is () meters.
3. Do the final review question 6.
(1) Students practice swearing.
(2) How do you compare say-say ○ and ○?
4. Fill in the appropriate scores in () and compare their sizes.
Third, simple fractional addition and subtraction.
1, (1) Do the final review question 7.
(2) Supplementary exercises
(1) Two engineering teams of Party A and Party B build a railway. Team A built this road and team B built this road. How many roads have these two teams built?
(2) Xiaoming's distance from home to school is kilometers. He has walked 1000 km. How many kilometers are left?
Students calculate continuously and perform by name.
Fourth, the class summary
What did you review in this class? What do you know about fractions?
work design
Fill in the blanks:
(1) is ().
2 is ().
3 meters is () meters.