1. Skillfully use the addition and subtraction within 10, and understand that the same answer can correspond to multiple formulas.
2. Be familiar with some important telephone numbers in life and be willing to know the contact information with your companions.
Activity preparation:
1. 10+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0.
2. Carry out the theme activity of "I want to go to primary school". Children have a desire to know the contact information of their peers.
Activity flow:
First, the guiding part: review the addition and subtraction within 10.
Teacher: Our children will graduate soon. A few days ago, everyone was talking about the contact information after breaking up, including writing letters, sending greeting cards, dropping in and making phone calls ... Today, we are going to play a game of deciphering phone numbers.
(1) Decipher the phone number by reading the questions.
The teacher shows a digital card consisting of eight addition and subtraction problems, such as 3+3, 7-4, 8+ 1 ... This link is to help children review the addition and subtraction within 10.
During the activity:
The teacher asked questions from many angles, such as what is the first number of this mobile phone? What number is "6"? What is the last one?
Teacher: You are great! I deciphered the phone number at once. How did you decipher it?
Yang: It was decoded by addition and subtraction.
Teacher: Do you know whose mobile phone this is?
Young: kindergarten.
Teacher: You can call this number in the future if you have something to do or want to. Tell me together. What's the phone number of the kindergarten?
(2) Psychologically deciphering telephone numbers.
1. The teacher showed the second telephone password and asked: Calculate in your mind and keep the answer in your heart. We'll talk about it later.
2. The teacher showed the third telephone password, demanding that it be deciphered accurately and quickly, and deciphered the telephone password at once.
Second, the learning part: set the password for the phone number and decode it.
(1) Calculate the answer according to the formula.
1. Divide the children into four teams: red, green, yellow and blue. Each team has 10 phone numbers. In the form of group competition, compare which team has the greatest ability to decipher the phone number quickly and accurately.
2. Exchange inspection for each group.
Please send a representative from each team to report the score of the other team.
Teaching plan 2 of "addition and subtraction within 10" in kindergarten class;
1. Make students consolidate the oral calculation method of addition and subtraction within 10.
2. Through a large number of various forms of exercises, students can correctly and quickly add and subtract within 10, and improve their computing ability.
3. Cultivate students' good computing habits.
Teaching emphases and difficulties:
Cultivate students' correct and fast oral calculation ability.
Teaching aid preparation:
Dictation card, headdress, radish map, mailbox map, "one break" map, projector.
Teaching process:
We learned the oral calculation method of addition and subtraction within 10. There is a practice class today.
(blackboard writing: practice)
See who can do oral calculations correctly and quickly.
(On the basis of students' understanding of arithmetic, conduct basic oral arithmetic training. A * * * has designed thirteen forms, and the exercise content pays attention to diversity, ladder and interest. )
1. Training composition:
If you want to calculate orally correctly and quickly, you must memorize the composition of numbers and practice the composition of each number from 2 to 10.
(1) password matching:
Exercise 2 ~ 5 the composition of each number.
(2) Oral answer:
①7 What groups are there?
29 What groups are there?
(3) gesturing:
Composition of Exercise 6 and Exercise 8.
(4) Gesture composition:
Gesture and talk about the composition of 10.
2. Motherboard performance:
Today, our class has a rest. It wants to see how you study. It gives you a few questions. Who will do it? Post a picture of "take a break" and write the following questions on the blackboard. )
3○4=7 6+4=□ 7+3=□
8○2=6 □+□=□ 7-3=□
□-□=□
□-□=□
3. Reading calculation: it is required to read the questions accurately and calculate the logarithm. (projection)
10 plus or minus questions.
4. Quietly calculate: (projection)
(Odd array students count first and tell the deskmate quietly. When the classmates at the same table agreed with his calculation results, they nodded one after another; Raise your hand and report to the teacher if you disagree, and then the teacher will discuss who is right and who is wrong. After doing a few questions, switch to double arrays to calculate. )
10 plus or minus questions.
5. Modify the performance and ask questions:
(1) What are the names of the first group of questions 3, 4 and 7? What are the names of 8, 2 and 6?
(2) The second group is entitled What is 6+4 equal to 10 and 4+6 equal to 10? How to calculate 10-6=4? How to calculate 10-4=6?
(3) What is the meaning of "+"in the third group of questions? What does 7+3= 10 mean?
What does "-"mean? What does 7-3=4 mean?
Note: Some people often subtract addition and add subtraction. Look at the symbols before you do the problem. When it is "+",you should combine the two numbers. When it is "-",subtract a few and remove a few from the minuend.
6. Gesture calculation: (projection)
The teacher said 10 add and subtract *** 10. The students gestured to show the results of oral calculation.
7. Password check: (Projection)
According to the projection problem, the teacher said the addition and subtraction problem within 10 10. The students said enough and asked to blurt it out.
8. Game-"Selecting Excellent Postman":
Black cat and white cat are postmen, played by two students. Everyone sends 10 letters, and each letter has a theme. Whoever works out the score of this question first will drop the letter into the numbered mailbox posted on the blackboard. When delivering letters, whoever casts accurately and quickly is an excellent postman.
Who is the black cat? Send a black cat headdress to the students. )
Who is the white cat? Let the students put on the white cat headdress. )
After the competition, the winners will be awarded prizes after inspection.
9. Visual calculation: Look at the numbers written in the formula. Ask to see the problem and write the correct number. The apparent calculation problem is an addition and subtraction problem within 10, with ***8 paths.
10. Listen and calculate: Listen and write down the number of questions. Require accurate questions and correct figures. Listening and calculation questions are addition and subtraction questions within 10, and there are ***8 paths.
1 1. Game-"Radish Pulling Competition";
White rabbit and grey rabbit compete to pull radish. The two students are white rabbit and grey rabbit respectively. The teacher said 10, whoever works out the numbers first will come to the blackboard and pull out the radish with numbers. The person who draws the right number wins.
Who will be the white rabbit? (wearing a white rabbit headdress. )
Who will be the grey rabbit? (wearing a gray rabbit headdress. )
After the competition, the winner will be awarded a prize.
12. Fast Computing Competition:
Calculate the type questions in the textbook and see who can calculate them correctly and quickly. Please refer to page 46 of the textbook 10 and ***20 questions.
After the revision is completed, the top five will be reviewed and awarded.
13. Quiz: See who can think best.
What is the addition formula of (1) and 10? The student answers, and the teacher writes it on the blackboard. )
(2) What are the subtraction formulas of difference 3? The student answers, and the teacher writes it on the blackboard. )
14. We did a lot of exercises in this class. The addition and subtraction within 10 must be calculated correctly, and the numbers must be blurted out. We haven't met the requirements yet, so we should strengthen our practice in the future so that the whole class can do oral calculations correctly and quickly.