Study On Teaching Of Example Of “Integer Four Operations” In Primary School Mathe Matics

The acceptability,constructibility and transferability of the examples make it very effective to learn from them.According to the original meaning of "example" and the relevant theories of example,example refer to the problems that can be based on,can be used as a comparison,and contain the solving process.In individual development,examples have the following four values: to provide concrete objects for abstract knowledge;Stating internal thinking and providing cognitive stereotypes;Summarize the content and promote the transfer of learning;Initiate active construction and develop learning ability.In the field of "integer four arithmetic",students should master relevant arithmetic knowledge and skills and develop their arithmetic ability.Theoretically speaking,teaching with examples can effectively achieve the goal.Moreover,considering the teaching from the perspective of example function,the problems in example teaching can be found and the current situation can be improved.According to the requirements of mathematics curriculum standard for full-time compulsory education,it is found that the example of "integer arithmetic" in the educational edition includes five parts: explanation of arithmetic knowledge,demonstration of arithmetic steps,exchange of various arithmetic,induction of arithmetic and selection of reasonable arithmetic.Taking the target as the classification standard,the 114 examples can be divided into four categories: construction of operational knowledge,formation of operational skills,openness and construction of models,which have the functions of explaining knowledge,forming skills,developing exploration ability and promoting migration.In addition,through the classified sample,found that it has the following features: experience operation meaning in reducing gradually,gradually understand the calculate method of the abstract,incomplete demonstration examples of increase year by year,gradually in the open topics into their hands,the choice of reasonable algorithm rationality on experience and gradually transition to the independent induction algorithm.Then,based on this,the observation scale is developed,and the teaching of examples is evaluatedBy observing the teaching activities of the mathematics teachers' leader of grade 1 to grade 4 in a primary school in jinan,it is found that there are three major problems in the teaching of example,the explanation of operation knowledge is not in-depth,the examples with incomplete demonstration are missing,and the contents of learning are not summarized.According to the observation,the problems in teaching with examples are mainly caused by teachers' improper understanding of teaching objectives and the nature of examples and inappropriate selection of teaching strategies.In view of these three reasons,some suggestions are put forward from the three aspects of the occupation of data,grasp the operational objectives;Insist on lifelong learning,update the concept of examples;Consider the function of example,choose teaching strategy.