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N duality learns at the beginning of simple equation group

来源: 作者:Stand originally 时间:2008-12-24 Tag: 点击:

Education proposal

One, analysis of key, difficulty

The key of this length education is to make the student understands the implication of the solution of group of binary simple equation, binary simple equation and group of binary simple equation, whether is can examining the solution of group of a certain binary simple equation to numerical value. Difficulty is the meaning of the solution that knows group of binary simple equation. Difficulty depended on becoming 2 numerical value from a numerical value here, and these 2 numerical value close together, just count the solution of group of binary simple equation. Will represent the solution of group of binary simple equation with big bracket, what can make the student overcomes understanding from formally is difficult; And the unknown number that two mutual connection already contained to wear in the problem that tell Qing Dynasty, keep their cost coming out just is a problem to solve. This is the crucial place that overcomes this one difficulty.

2, intellectual structure

This bar carries the real problem that begs two unknown, the knowledge of a yuan of simple equation that uses a student to pass in order to learn first goes solving, try to set two unknown number next, according to the title two medium conditions list two equation, introduce series of binary simple equation, binary simple equation thereby (the language that uses a description) and the concept such as the solution of group of binary simple equation.

3, proposal teaching a law

1. The teacher reconciles through reviewing equation to reach its to solve the knowledge such as equation, activate circumstances, guide task, introduce the idea of binary simple equation and group of binary simple equation.

2. The simple equation of judgement n duality that makes student society correct through iteration exercise reachs group of binary simple equation.

3. Adopt the education of the concept of the solution of group of binary simple equation, carry demonstrative action of the teacher, let a student learn to examine correctly the problem of the solution of group of binary simple equation.

4. Learn the difficulty on to decrease, make the student acquires the the basiccest, most practical knowledge, group of equation of unfavorable introduction depend on each other is like in education

Be like with contradictory equation group

Wait for a concept, also do not make the coefficient of the unknown of equation of the any in equation group is entirely 0 (because the special case in this kind of maths is less real significance) of course, as special case, appear similar


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