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Understanding and Composition of 8+9 Teaching Design
Teaching objectives:
(1) Guide students to experience the process of knowing 8 and 9, and initially establish the representations of 8 and 9. Can write 8 and 9.
(2) Knowing the order of 8 and 9 in natural numbers, we will compare the size of each number from 0 to 9 and know the ordinal meaning of 8 and 9.
(3) Cultivate students' observation ability, practical ability and language expression ability.
Teaching focus:
Can correctly count the number of objects with numbers 8 and 9, and can read and write the composition and decomposition of numbers 8 and 9.
Teaching difficulties: correctly distinguish the significance of cardinality and ordinal number of 8 and 9, and correctly write 8 and 9.
Teaching aids and learning tools:
(1), arrange students to collect data of 8 and 9 before class.
(2), theme diagram, counter, ruler diagram, bitmap diagram, circle and triangle, etc.
teaching process
(A) review the old knowledge
1, guide students to count from 0 to 7 and then from 7 to 0.
2. Answer orally. (Fill in the box? & gt& lt？ Or? =? )
7 4 2 3 7 6 4 7 1 3
5 5 1 4 6 5 4 2 7 7
(B) Introduce dialogue and impart new knowledge.
Taking the opportunity that Nanchang is creating a garden city, this paper introduces the understanding of "8" and "9" with the theme map in the book. Stimulate students' feelings of loving beauty and hometown.
The cardinal meaning of 1, teaching 8 and 9.
(1). Teaching theme painting. Guide the students to see what is in the picture and how many there are. Topic maps provide 8 and 9 objects for teachers and students:
A. There are 8 trees on both sides of the campus.
B.there are 8 flowers in the flower bed.
There are eight words on the blackboard: love nature and protect the environment.
D. There are 9 pots of flowers under the blackboard.
E There are 8 students and 1 teacher working beside the flower bed.
F. There are nine butterflies flying in the flower bed.
(Number of students? 8、9? At first, things were in disorder. When the teacher summarizes, he should guide them to count in a certain direction and in a certain order. For example, from top to bottom, from outside to inside, from big to small and so on. )
(2) Before class, talk about the homework of 8 or 9 objects collected by everyone, and communicate with your peers in the group.
(3) Set up school tools.
Count 8 circles and 9 triangles from the learning tool, put two figures, and put any figure you like.
2. The order of teaching 8 and 9
(1). The teacher shows the counter and asks the students to count. Pause when counting to the seventh bead and ask the students: How many are the seven beads and then dial one? How much is eight beads plus one?
Exercise: Play clapping game, the teacher clap your hands and count the students.
(2). Show me the ruler chart:
A let the students know the position of 8.9 in the support.
In the ruler chart, ask the students to fill in the blanks and remember the order of numbers from 0 to 9.
Fill it out and ask the students to count backwards. )
Finally, let the students in the group look at the numbers on the ruler and ask some questions, so that the students can ask and answer each other.
3. Compare the sizes of 7, 8 and 9 in teaching.
(1). Show me the sketch.
First, let the students count the number of ideas in these three idea maps, and then let them tell how to count the number of ideas quickly.
(2) Compare the sizes of 7, 8 and 9.
Please choose two of these three numbers at random and indicate their sizes with the symbols you have learned before. Use? & gt？ 、? & lt？ Write the relationship between the size of two numbers. The students' answers are as follows:
7 & lt88 & lt； 9 7< 9
8 & gt7 9 >； 89 >； seven
4. Teaching the ordinal meaning of 8 and 9
Please count eight students before you go on stage. Let the students count how many students there are. From left to right, who ranks eighth, and from right to left, who ranks eighth. Then add the teacher, count how many people there are, and then count from left to right who ranks ninth, and from right to left who ranks ninth.
5. Teaching Writing 8 and 9
(1) Guide the writing of 8
First, let the students look at the eight on the blackboard and ask them what the eight looks like. Explain while playing: write 8 words at a time. Start from the upper right of the left half of Tian Zige, write an S from top to bottom, then cross the waist of S from bottom to top and connect with a pen. Finally, please look at the blackboard? 8? Write empty words, and then let the students practice writing on the desktop with their forefinger? 8? , and then open the book description.
(2) Guiding Writing 9
The word "9" was written in one stroke. Its upper part looks like a 0, and its vertical image is 1. The 0 in the upper part should be written in the small box above. Be careful not to have sharp edges. Write at the beginning of 0, and then tilt down until offline.
(3) Assign Exercise 8 1, 2, 5.
Four. abstract
Reward students with small red flags to tie knots.
Today, we met 8 and 9. We solved many problems with 8 and 9. When we get home, let's see where there are 8 and 9 around us.
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Understanding and composition of 8+9 instructional design II
Teaching objectives:
1, knowledge goal: in the process of setting up learning tools, feel and master the composition of 8 and 9.
2. Ability goal: cultivate hands-on ability, observation ability and oral expression ability.
3. Emotional goal: cultivate the quality of unity and cooperation through group activities.
Teaching emphasis: master the composition of 8 and 9.
Teaching preparation: courseware, digital card of 1-9.
Teaching process:
First, check the import.
Oral practice of addition and subtraction within 1 and 7
Driving a train game:
Teacher: My train is about to leave. Health: What time does it open?
The teacher shows the formula card, such as: 6+ 1=
Teacher: Please guess? Health: 6+ 1=7 Your train leaves at 7 o'clock. (from slow to fast)
2. Import:
Students, the teacher gave us a little riddle to guess, to see who is the cleverest and can guess quickly. The two brothers are good neighbors. Brother is less than 10, and brother is more than 7. Please guess. Last class, we not only learned 8 and 9, but also learned how to write 8 and 9. In this lesson, let's learn how 8 and 9 are formed, shall we?
(Writing on the blackboard: Composition of 8 and 9)
Second, hands-on operation and cooperative exploration.
1. Make a scene: We had a good time just now, but Baby Monkey was worried. Children, do you want to know why? Beibei likes peaches very much. Mother brought back eight peaches for him, but on one condition, she asked Beibei to divide the eight peaches into two parts in different ways and eat them after passing the customs. Can the students help Beibei? Please cooperate with two people at the same table, use a stick instead of a peach to get a point, say it out and fill in the results in the exercise book.
2. Let the students report to the class. According to the student's report, show the composition and exploded view of 8.
3. Do exercises to fill in the blanks and consolidate the composition of 8.
Third, discuss and exchange and consolidate new knowledge.
1, students only know the composition of 8 by splitting peaches. How can I remember the composition of 8? Did you find any tips?
(1) For memory.
② Look at one and two.
2. Game practice.
1, clap your hands:
Teacher: Let's play a clap game.
The rules of the game are as follows: the number of times I clap my hands with everyone is 8, and the teacher shoots first. The teacher applauded 7 times and said: I applaud 7 students: I applaud 1 (applause)
Teachers and students: 1 and 7 form 8, which can be divided into 1 and 7.
Fourth, the composition of cooperative learning 9.
1. If you add another peach, will it be divided? Just like the composition of 8 just now, say the composition of 9 by hand and write it down in the exercise book.
2. Write the composition of Report 9 on the blackboard to find a regular memory.
3. Card game: Teachers and students hold up 9 pairs of digital cards.
Five, guide reading P55 page and fill in the complete.
6. Class Summary: What have we learned in this class?
Homework: recite the composition of 8 and 9.