Primary Mathematics Teaching "issue guidance" in the strategy – educat
Problem originated in the American Guidance Education Scientist John? Dewey's "learning by doing" way of thinking to solve the problem, that problem by creating a specific scenario to guide students in solving problems, the initiative to access and use of knowledge, skills and inspire students to learn initiative and independence learning ability and creative problem-solving skills of classroom instruction. Question Teaching strategies will be the students level of knowledge, thoughts, age characteristics, the contents of the problem, the problem difficult to solve the problem of environmental and other factors. But the general rule, the basic strategy can determine the following:
1, stimulate intellectual curiosity of students Guiding
main mathematical problem is students and whether the initiative was inspired and mobilized is the decisive factor in learning success. Therefore, teachers must be good to stimulate students desire for knowledge, induce students to address the needs of Guidance, Guidance to the problem of learning can be successfully implemented.
Example: In the second year of teaching "average", the design of such a plot: conventional classroom competition for boys and girls, good girls do, boys do just as good. Teachers giving out awards, boys a flower, flower girls 5, can it? The number of flowers is not as much, causing students to dissatisfaction, protest against unfair. How should we be divided? Students into the class learning to solve the problem.
Guided teaching, design issues are: classroom learning to decorate a garden, the teacher made a 8 flowers placed around the garden in the square learning, demands as much as each side was placed. How you want to put?
Example: in the third grade, "Relationship between the number of exercise classes", the design question: Lucky film at promotion, "Buy two get one, buy three gifts 2." How to buy a more cost-effective film it? Just learn to face the "relationship between the number of commodities", the students have a desire, they want to try I have learned can use it? I could become a "mini expert shopping" it? How to buy in the end it really "take advantage" mean? From the student's performance, we can see that it is appropriate to issue a material.
Another example: the student perception of the cuboid and the cube quadrature characteristics and basic computing, the concept of space for students to design a "three-dimensional graphics of the body and face" lesson. In the class, by a similar cube sandbags leads to mathematical problems to be solved: how to get the sandbags in the flat patterns? It's flat patterns, there are several? Opposite to the same color creates a "three-color package," What kind of material? These materials can be how to connect it? This problem scenarios, from the students after-school life, but as a problem for students is "new." They use three-dimensional graphics have the knowledge, skills, and actively put into solving the problem being explored.
2, thinking ability of students Students level of mathematical thinking, problem-solving level directly affects the level. One general thinking, problem solving, logical thinking ability is an important student performance. Therefore, teachers should know how to seize in teaching every aspect of the thinking ability of students efforts, the problem of learning provide a strong Guidance carrier.
Example: "Exercises for flat graphics", when the problem: with 20 meters of the fence, "through wall" around an area of large plantations as far as possible, what can around? One appears, immediately thought of intuitive thinking students should be enclosed circle, and the area of a circle than a square square than rectangular area. This intuitive judgments for students, teachers guide students to be verified, and inspire students have no other options? Some students ventured to ask can borrow two walls, and feel it should be enclosed fan bigger than the semicircle. Teachers encourage students to try.
3, strengthening the skill level of students
The level of knowledge and skills students had the problem of learning an important guarantee for Guidance.
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