| Geometry has been one of the important contents of mathematics study in primary and secondary schools since it was officially entered into Chinese classroom.It has its own powerful function and irreplaceable educational value,so its content has always been the focus of the reform of Chinese and foreign mathematics curriculum.At present,a new round of compulsory education curriculum standard revision has been started,and the choice of curriculum content,arrangements put forward high requirements.For the revision of curriculum standards,some experts and scholars put forward to learn from the useful experience of foreign countries,but also to review the useful experience of China’s curriculum reform and the lessons of failure.Therefore,it is of practical significance to study the changes of geometric content in the mathematics outline and standards of primary and junior high schools in China over the past hundred years(1912-2012).This study uses the combination of quantitative research and qualitative research,mainly using literature method,comparative method,content analysis method,sorting out the knowledge points of the geometric content of primary and junior high schools over the past hundred years,according to the background of the times and outline and standards promulgated and implemented by the three periods: the Republic of China period(1912-1948),the founding of New China to the reform and openingup(1949-1977),after the reform and opening-up(1978-2012),each period from the outline and standard background introduction,content breadth,content depth,content organization analysis.Through the research,the following main conclusions and enlightenments are obtained:Conclusion: In the past hundred years,the geometric content of primary school has undergone the transformation from "none" to "yes",its knowledge module has stability and development,its total number of knowledge points has risen in a straight line,the number of knowledge points moved down to primary school has become more and more difficult;Over the past hundred years,the geometric content depth of primary and junior high schools has changed repeatedly between "improvement" and "decrease".Over the past hundred years,the geometric content of primary and junior high schools has been arranged in a spiral,and the spiral is getting stronger and stronger,the spiral level of the Republic of China period is weak and general,the helix level before the founding of New China to reform and opening up is general and strong,and the spiral level after reform and opening up is stronger and strongest.Revelation:(1)Continue to retain the traditional knowledge module of geometric content,reasonably increase the modern knowledge module,(2)reasonably increase or delete the basic knowledge of geometric content,(3)the number of knowledge points of geometric content should be controlled in a suitable range,(4)the teaching method of geometric content selection knowledge should be given in the curriculum standard,(5)geometric content should avoid "narrow and deep" or "wide and shallow" Phenomenon,(6)Knowledge Point Specific teaching Target behavior verb expression should be accurate and not repeated,(7)the total reference class hours of mathematics content teaching should be given uniformly in the curriculum standard,(8)geometric content organization should continue to follow the spiral arrangement,(9)geometric content organization should follow the combination of students’ cognitive development principles and systematic principles of knowledge,(10)junior high school down The knowledge of primary school should conform to the age characteristics and acceptance ability of the students. |
