Mathematics teaching plan for large classes: 9 1 subtraction of activity goals
1, learn the subtraction of 9.
2. Experience the fun of subtraction games.
3. Cultivate children's awareness of unity and cooperation.
4. Improve the ability of logical reasoning and form a good habit of doing things in an orderly way.
5. Understand the relativity of more and less.
Activities to be prepared
Watercolor pen, digital jar, pen, digital card.
Activity process
First, the game: reduce the pen relay
Divide the children into groups of 9 people, play the game of "reducing pen relay" and experience the significance of subtraction.
Teacher: The first child took one out of a cup with nine pens and said 9- 1 = 8. Then he handed the cup down, took out another pen with 1 and said 8- 1 = 7, so it became1-1=
Activity guidance: import with "games" to stimulate children's interest.
Second, the game: see who is fast.
(1) Dictate application questions and guide children to write formulas according to life situations.
(2) Instruct children to write 9 subtraction application problems by themselves according to the situation, with one person compiling the problems and other formulas for children.
Third, the game: frog diving
The teacher gives questions, and the children calculate continuously, and play the game of frog diving together.
Activity expansion:
Organize children to play the game of "finding friends".
Activity reflection:
The children are very interested in this activity and have achieved the teaching purpose through games. Some games children will start to operate without hearing the requirements of the game, which is a bit messy. I'll pay attention to organizing math activities next time!
Activity evaluation:
The teacher provided the children with a large number of mathematical operation tools. Children carry out classified practice activities in groups, and operate according to their own cognitive experience and knowledge to stimulate their interest in knowledge and experience the pleasure of success through continuous exploration. In the activities, teachers use games and peer evaluation methods to give full play to children's dominant position, cultivate children's sense of cooperation, and successfully complete the teaching task.
Mathematics teaching plan for large class: 9 minus 2 Activity goal:
1, can know the application of addition and subtraction according to examples and own experience, say one thing, say two numbers and ask a question.
2. Be able to see objects, pictures or scenes, and initially learn to copy the application problems of addition and subtraction within 9.
3. Different methods can be used to solve the application problem of addition and subtraction within 9.
Activity preparation:
1, Tuka: safflower, yellow flower, addition formula card.
2. Teaching wall chart.
3, all kinds of physical objects.
Activity flow:
First, warm-up activities: Clap your hands The teacher said, "Tell me, children, how much is 8 divided by 2?" A: Eight can be divided into two and six. Then ask: what is 2 plus 6? Answer.
Second, the wonderful introduction: the debut question tests you.
1, talk and let the children help the children in the middle class solve the problems, and give examples.
"Xiao Ming made five red flowers and four yellow flowers. How many flowers are there in a * * *? " 2. Understand the structure of application questions. What does this question say? Tell us a few figures. What other questions did you ask? Let children think and answer questions and feel the structure of application questions: say one thing, two numbers and ask a question.
Third, the solitaire game: let's make up the question.
1, show pictures, the teacher tells stories, and ask children questions.
The teacher showed two short pencils and three long pencils in kind. The child looks at something and says two numbers. The teacher can ask.
3, children in pairs, one person to fill in the real thing, one person to ask questions.
Third, operation activities: look at the title card to compile application questions (there are formulas and pictures on the title card) 1, the teacher guides, look at the title card, for example: 23=? Make up an application problem about pencils.
2. The children at the same table cooperate and look at the cards in their hands. One person says conditions, one person asks questions, and then exchange questions.
3. Children's feedback.
Fourth, I want you to calculate different things on the diagram and make up different addition application problems. The children work in pairs. One person makes up the application problem and the other lists the formulas on the horizontal line.
Mathematics teaching plan for large classes: subtraction of 9 3 I. Activity objectives:
1. Look at the formula of split combination and work out the answer to the unknown.
2. Learn the first group of addition and subtraction of 9, and see the formula to fill the application problem.
3. Learn induction and gain experience.
Activity preparation: 1, number, addition and subtraction, equal sign, division sign.
2. The bitmap of the first group of activity flows and 9: 1. Review 9. Form a game: touch the ball.
Second, look at division and formula, and learn the first group of addition and subtraction of 9.
(1) displays the first combination of 8: "How do you pronounce this combination?" "Who would use a formula to express this combination?" (1+8 =) "Which formula do you use to represent which combination formula?" (The formula 1+8 = indicates that 1 and 8 add up to 9. "Please work out the number of this formula." "Which number is this formula in the division formula?" (Missing number in the split formula) "Please fill in the split formula completely."
(2) The split formula 9 can be split into 8 and? . "How to read this split?" "List the formulas and figure out which number is less in the division formula?" (9-8 = 1) Third, the first, second and third group activities: Write the formula according to the change of bitmap.
The fourth, fifth, sixth and seventh groups: fill in the formulas and list the formulas.
Third, activities.
(1) displays four formulas and their corresponding four formulas. Children will focus on the meaning of these two formulas and the listed formulas.
(2) Inductive combination.
"Which combination formula can be used to express these four formulas?"
(3) Look at the formula to compile application questions.
"What else can these four formulas represent?"
Mathematics Teaching Plan for Large Classes: Subtraction 9 4 Activity Goal;
1, learn the relationship between quantities and understand the meaning of addition and subtraction.
2. Further practice the addition and subtraction of 9.
Activity preparation:
1, each child has a set of 1-9 digital cards, ten, one, =, headdresses of related animals.
2. The teacher prepares a magnet teaching aid.
Activity flow:
First, stimulate children's interest.
1. The teacher brought nine toys for the children to count.
2. Let the children say 9 points.
Second, group activities.
1. What graphic baby did the teacher bring you? Show the triangle (red and blue) and ask the children to say the addition formula.
The teacher is asking: how many triangles are left after subtracting 1 from 9 triangles?
How to write the formula? (Book: 9- 1=8)
Eight out of nine baby triangles, how many are left?
2. Show Apple graphics.
Children, what did the teacher bring? (7 red apples, 2 purple apples) One * * *, how many? How to calculate? How to write the addition formula? (Book: 7+2) You can also write the addition formula (2+7). * * * 9 children's apples and 2 children's apples. How many apples are left? How to write formula 9-2=7?
Nine apples were given to seven children. How many apples are left? 9-7=2。
Iii. Business activities:
1, the first ball, six green balls and three orange balls-how many are there? How to work out the formula of 6+3 = 9 3+6 = 9 9-3 = 6 9-6 = 3?
2, operation 2 Show the pear-shaped picture for the child to say and then put out the formula: 5+4=9 4+5=9 9-5=4 9-4=5.
Fourth, game animals find homes.
Rules of the game; Children with animal headdresses are counted and then find a home. The rest of the children said, "XX animal, where is your home?" The little animal replied, "My home is here". (Wang Meiying)
Mathematics teaching plan for large class: 9 minus 5 Activity goal:
1, children can look at the formula and list the corresponding addition and subtraction formulas of 9, and can calculate correctly.
2. Listen to the teacher's oral application questions and list the corresponding formula solutions.
3. Cultivate children's good listening and writing habits in activities.
Focus of activities:
Children can look at the division and combination formulas, list the addition and subtraction formulas corresponding to 9, and calculate correctly.
Activity difficulty:
Listen to oral application questions and calculation formulas
Activity flow:
First, the game "Driving a Train"
1, children, today we are going to play a game of "driving a train". Only when the answer to the formula card in the teacher's hand is worked out can the train start.
2. The teacher shows the addition and subtraction formula card of 9 and the corresponding formula card, so that children can calculate the corresponding formula, and then lead the children to play the game of driving the train.
Second, review the addition and subtraction of 9
(a) review the composition of 9
1, children, now let's list the switching formula of 9.
2. The teacher said with the children that the teacher listed 9 on-off formulas.
(2) Look at the splitting formula.
1, children, the teacher will now show you the division and combination formulas of 9 and list the addition and subtraction formulas of 9.
2. (Pointing to the split type "9 can be divided into 1 and 8") Let children see this split type and put out the formula.
Children's pendulum, the teacher writes the formula1+8 = 9,8+1= 9,9-1= 8,9-8 =1.
3. (Pointing to the formula "9 can be divided into 2 and 7") Look at this formula, which formulas can you list?
Children's pendulum, the teacher writes the formula 2+7=9, 7+2=9, 9-2=7, 9-7=2.
4. (Pointing to the formula "9 can be divided into 3 and 6") Look at this formula, which formulas can you list?
Children's pendulum, the teacher writes the formula 3+6=9, 6+3=9, 9-3=6, 9-6=3.
5. (Pointing to the formula "9 can be divided into 4 and 5") Look at this formula, which formulas can you list?
Children's pendulum, the teacher writes the formula 4+5=9, 5+4=9, 9-4=5, 9-5=4.
Third, children operate "Listening to the teacher's oral report 9 application formula of addition and subtraction"
1, introducing activity requirements: Today, the teacher also prepared exercise books and pencils for children. Please turn to the page you haven't written yet, listen to the teacher's oral application questions, and list the formula solutions in the exercise book after reporting one question. When you listen, you must remember to listen carefully, don't rush to write, and think about whether this question should be added or subtracted while listening. When writing formulas, you should sit up straight, your head should not be too low, and pay attention to the writing format.
2. The teacher orally reports the application questions and the children write formulas.