1. The contents of the review are appropriate. The content of the review can be the content of the last class or the content closely related to this class.
2. Exploring calculation methods can enable students to use existing experience to solve problems.
3. There are corresponding exercises after the inquiry. After teaching the second example, there is a comparison. After comparison, let students clearly know the differences and connections between knowledge.
4. Attach importance to intuitive teaching and reflect the thinking process on the blackboard.
5. The practice is clear and organized.
Suggestion:
1. It is not flexible enough when the algorithm is diversified and the method is optimized. Students say that 1+2=3, then 1000+2000=3000 is actually thousands of 1+2, so it is 3 thousand, and 3 is written at the end of 3.
2. After comparing examples, the method of language induction and generalization should be accurate. For example, 3100-7001500+1000 depends on the characteristics of numbers to judge whether it is regarded as a hundred or a thousand.
3. In terms of expression, we should cultivate students' interest in speaking. In mathematics, students' expressive ability can also be trained. The statement is complete and orderly. Ask the students to talk more when practicing.
4. In practice, the time is not handled well. Buying gifts can arouse the enthusiasm of students. But it was done in a hurry.
5. After giving a set of numbers, ask the students to write an addition formula and a subtraction formula: 50+80 =130130-50 = 80. This form can be used in other exercises, so don't rush to reflect the relationship between addition and subtraction.
6. What do you think when 3100-700 =1500+1000 = these ratios are difficult?
Another article:
Teachers take textbooks as the background and textbooks as the stage, so that the whole teaching can go to students, so that students can exert their interest in learning to the extreme in the process of guiding their learning plans, so that everyone can take the initiative to learn, explore independently, cooperate in groups, and the whole class can exchange, summarize and refine with each other. In the whole process, Mr. Geng asked each group to report their findings, which not only affirmed the students' findings, but also achieved the role of praise, encouragement and example. Make each student truly become the master of learning, acquire new knowledge in the process of continuous discovery and breakthrough, so as to realize the maximum value of their own learning, and everyone feels the joy of success. Effectively mobilize all students to dare to discover, be good at discovering and dare to express their ideas, learn to reflect and correct their views, especially let students be primary school teachers. For example, when teaching example 500+800, turn the example into autonomous exploration, provide students with opportunities for autonomous learning, give students enough space and time to think, allow and encourage them to have different algorithms, respect their ideas, even if they are unreasonable or even wrong, and let them further clarify their reasoning in mutual communication, collision and discussion. After focusing on exploration, let students report different ideas, that is, continue to let students learn 800-500 and 960-800. Students find the addition and subtraction of whole hundred and whole ten in the process of group exploration, so that they can further clarify their arithmetic in mutual communication, collision and discussion. In fact, classroom teaching itself is a regrettable art, and teachers also have shortcomings. When consolidating exercises, the whole class should participate, and the whole class will be perfect.