Mathematics teaching plan for large class: new residential area 1 learning focus: further understand the practical significance of addition and subtraction.
Difficulties in learning: practice compiling arithmetic problems with three numbers.
I. Activity objectives:
1, according to different pictures, list the corresponding formulas, so as to perceive the quantitative relationship expressed by the addition and subtraction formulas.
2. Cultivate children's positive thinking ability and develop the flexibility of thinking.
3. Actively explore mathematical activities and be willing to talk about the exploration process.
Second, the activity preparation:
1, teaching AIDS: seven houses, three paintings, number 1-6, symbol+,-,=.
2, three pictures, pens, firecrackers, 6 strings, homemade gold and silver medals.
Third, the activity process:
1, review and consolidate: driving a train
Before, we played the game of driving a train with the numbers 4 and 5. Today, He Laoshi takes everyone to play the game of number 6 driving a train.
Hey hey! My train leaves at one o'clock. What time does your train leave? Hey hey! My train leaves at 5 o'clock. (collective, individual)
2, situational awareness-the first group of addition and subtraction in picture learning 6.
You see, the train took us to the newly-built residential area. There are seven residential areas including 1, 2, 3, 4, 5 and 6. I heard that there are many beautiful flowers in the community. Do you want to visit such a beautiful residential area? (Phone rings) It's the community security guard, saying that there are three pictures in each of the seven communities. Do you want to talk about it? Ok, let's start the discussion.
Mathematics Teaching Plan for Large Classes: New Community 2 Activity Objectives;
1, according to different pictures, list the corresponding formulas, so as to perceive the quantitative relationship expressed by the addition and subtraction formulas.
2. Cultivate children's positive thinking ability and develop the flexibility of thinking.
3. Actively explore mathematical activities and be willing to talk about the exploration process.
4. Cultivate the ability to observe, identify and bring to justice.
5, improve the ability of logical reasoning, develop a good habit of doing things in an orderly way.
Activity preparation:
1, teaching AIDS: seven houses, three paintings, number 1-6, symbol,-,=.
2, three pictures, pens, firecrackers, 6 strings, homemade gold and silver medals.
Activity flow:
1, review and consolidate: driving a train
Before, we played the game of driving a train with the numbers 4 and 5. Today, He Laoshi takes everyone to play the game of number 6 driving a train.
Hey hey! My train leaves at one o'clock. What time does your train leave? Hey hey! My train leaves at 5 o'clock. (collective, individual)
2, situational awareness-the first group of addition and subtraction in picture learning 6.
You see, the train took us to the newly-built residential area. There are seven residential areas including 1, 2, 3, 4, 5 and 6. I heard that there are many beautiful flowers in the community. Do you want to visit such a beautiful residential area? (Phone rings) It's the community security guard, saying that there are three pictures in each of the seven communities. Do you want to talk about it? Ok, let's start the discussion.
1) children's first exploration operation-telling with pictures
(1) Q: Please tell me, which community did you choose? What does it say? (There are 5 red flowers in the flowerpot, 1 white flowers, and 6 tigers in the flowerpot) Collective verification and collective storytelling.
(2) Please tell stories to children in other communities (after being verified by everyone, tell stories collectively).
Conclusion: Ah, our children are really capable. We can make things clear in seven communities at once, and the security guards also praised us as the smartest little guests. Praise yourself quickly.
2) Children's second exploration operation-listing formulas while talking.
(The phone rang again), the community security called He Laoshi again, saying that he also wanted to test our children. Just now, we asked the children to talk about seven communities respectively. Now, let the children record it with a formula problem according to what they just said.
1) Explain the operation requirements of children.
2) Key question: How did you record it? Why use the addition formula? Ask a child to come up and remember this addition formula as he speaks. (16=7) Read the formula twice together. Besides listing an addition problem with these three numbers, can children list other problems with these three numbers? Children wait in turn and get three other formulas respectively. 6 1=7、7- 1=6、7-6= 1。 Read the formula again.
3. Experience understanding-exchange rule
1) Let children observe these formulas. Do they have any little secrets? See who can discover the secret first.
Summary: 16=7 and 6 1=7 have the same numbers, but their positions are different. But the total number remains the same, so when I see 16=7, I immediately think of 6 1 = 7. We call it the friend problem. See also 7- 1 = 6, and immediately think of 7-6 = 1. We also call it the friend problem.
2) Practice communication. The teacher took out the problem card and asked our child to tell us who his friend's problem was at once. 16=7(6 1=7)、7- 1=6(7-6= 1)
4. Internalized migration-children's games
Game: firecrackers at night
When the new residential area is completed, many residents will move to their new homes. Let's set off firecrackers for them, but there is one requirement: there is a formula hidden in each firecracker. Whoever can answer the formula correctly, firecrackers will ring and get a small red flower. Similarly, if the formula is not answered correctly, firecrackers will not ring.
(2) Please choose one child from each team to participate in the competition at a time. If you see the last team get the most little red flowers, you will win the gold medal.
Summary: Award the gold medal winners and silver medal winners in the competition.
End of activity:
Who called to drive the train? Oh, the security guard called and invited us to visit another newly-built community. Are you happy? Shall we go by train? Take the children out of the activity room by train.
Activity expansion:
1, continue to explore the addition and subtraction of the second group and the third group 7.
2. Use regional activities to further consolidate the picture layout.
Activity reflection:
1. Teachers can arrange students to observe things purposefully before class, thus paving the way for this class. Before class, students can accumulate experience and lay a foundation for better judging the shooting position of photos in class. Some objects are impossible to observe directly in the classroom, such as observing the community and moving cars? Teachers can guide students to actually observe, take photos with cameras, draw strokes and try to record, integrate art and mathematics, stimulate students' interest in observation, and thus cultivate students' spatial imagination ability.
2. Gatekeepers, cameras, photography and handicrafts are introduced into this course, which greatly stimulates students' interest in learning. Evaluating students with the titles of little photographer, little cameraman and little artist can inspire students' confidence and courage to accept challenges.
3. Teachers can make full use of students' life experience, and on the basis of observation, give full play to students' spatial imagination and identify the corresponding pictures taken in different positions. Teachers can also let students combine operation and imagination organically in activities, so that students can make full use of the prepared cubes and organize them to think, go for a ride, see, draw and operate, which can not only help students master graphics, but also be used to verify whether students' spatial imagination of graphics is correct.
4. On the basis of students' independent thinking, teachers let them communicate in groups, express the observed scenes in their own language, let students play guessing games in groups, and let them experience the feeling of success in the game, which are conducive to the formation and development of students' spatial concepts and cultivate the ability of orderly expression.
Encyclopedia: Community refers to a large residential area with relatively independent living environment in a certain area of the city, equipped with complete sets of living service facilities, such as commercial outlets, schools (kindergartens) and so on.