| The overall design of the unit is based on the teaching materials,and the content that "has a certain intrinsic correlation" is analyzed,reorganized and integrated,and a relatively complete teaching unit is formed.Due to the integrity of the curriculum standard content in the compulsory education stage and the systematic characteristics of mathematics education,teachers need to stand on a higher perspective and be able to think about problems from an overall perspective in order to achieve high-level teaching goals.The overall design of the unit attracts everyone’s attention with its superiority compared with ordinary class teaching.However,there are many problems in implementing the overall teaching of the unit: how to carry out the unit teaching design;How to implement unit teaching so that it avoids formality and truly highlights its superiority,etc.,these questions are still worth exploring.Therefore,this paper is committed to studying how junior high school mathematics teachers can better design unit teaching under the concept of new curriculum standards,and use the overall unit design teaching to improve the efficiency of mathematics lessons.This paper takes the literature method,questionnaire method and case analysis method as the research methods,and takes the fourth chapter of the ninth grade volume of the Beijing Normal University edition "Similarity of Graphics" as an example to study the overall teaching design of the current unit of junior high school mathematics.It is divided into five chapters.The first chapter mainly analyzes the background of the overall design of the unit and related research at home and abroad,so as to put forward the main problems and significance of this topic.The second chapter mainly aims to understand the current situation of mathematics teachers in junior high school and the understanding of the overall teaching of the unit through questionnaire surveys.The third chapter mainly analyzes the characteristics of the overall teaching of mathematics units and obtains unit lesson preparation strategies.Chapter4 mainly takes "graphic similarity" as an example,and analyzes the overall design of the unit from the aspects of determining the general concept of the unit,expressing the unit goal,constructing the unit curriculum,implementing the unit curriculum,and evaluating the unit curriculum.Chapter 5 mainly analyzes the results of questionnaires and the test results of similar units in graphs,and explains the impact of overall unit design on the effectiveness of mathematics lessons in junior high school from the cognitive dimension and practical perspectives.In view of the current problem of overall teaching of mathematics units in junior high schools,based on the research of this paper,the following suggestions are put forward for the overall teaching of mathematics units in junior high schools: teachers should strengthen the learning of the overall design of the unit,be able to understand the various processes of the overall design of the unit and the specific content of the analysis of each element,and reasonably implement the overall teaching of the unit;Schools should actively form teams and give full play to team strength to reduce the burden on teachers;At the same time,more platforms should be built to actively organize training and promote the improvement of teachers’ professional quality. |
