Teaching Research Of Precipitation Dissolving Balance Based On Advance Organizer

Precipitation dissolving balance as one of the four equilibrium theory of high schoolstudents to learn plays an important role in understanding the ion behavior in aqueoussolution thoroughly. In the present high school chemistry teaching, many students havemore or less difficult in learning precipitation dissolving balance. Precipitation dissolvingbalance is based on chemical reaction balance, solubility and other basics. And it meets therequirements for the use of advance organizer. Therefore, the author selects the strategy ofadvance organizer for teaching research of precipitation dissolving balance, In order toprovide some references for the teaching of precipitation dissolving balance.Based on the existing teaching research of precipitation dissolving balance and the useof advance organizer in chemistry teaching，and taking the strategy of advance organizer astheoretical guidance, I first analyze the related contents of precipitation dissolving balance.Then I examine the students’ existing knowledge base. I design and carry out the teachingplan of precipitation dissolving balance based on advance organizer. Finally, I test anddiscuss the results. The results show that the design of the strategy of advance organizer canhelp the teaching of precipitation dissolving balance.The paper includes seven parts. The main contents are as follows.PartⅠ：I clarify the reasons for the choice.PartⅡ： I summarize the teaching research of precipitation dissolving balance and theresearch of advance organizer in chemistry teaching. Among them，the former mainlyreviews the teaching design of precipitation dissolving balance. The latter mainly reviewsthe types of advance organizer and the use of the teaching mode.PartⅢ：I describe the main purpose of this study and the main task. PartⅣ：I introduce the theory about the strategy of advance organizer.PartⅤ：I design the teaching scheme of precipitation dissolving balance based on advanceorganizer. First, I analyze the content of the knowledge for precipitation dissolving balance.Then, I examine the students’ existing knowledge experience and design the strategy ofadvance organizer based on the above analysis. Finally, I finish the teaching design based onadvance organizer.PartⅥ：I carry out the teaching design and test the implementation effect. Then I analyzeand process the data.PartⅦ：I summarize and reflect the research conclusion.The innovation of this study lies in the following sections. I analyze the related contentof precipitation dissolving balance under the guidance of the strategy of advance organizerand complete the teaching design based on advance organizer.And I find that it can promotethe teaching of precipitation dissolving balance to associate the learning of the precipitationdissolving balance with the previous knowledge of students through the teachingexperiment.