Based On The "experimental Chemistry" Module Teaching Case Handheld Technology Experimental Study Development

On the Background of he New Curriculum Reform of chemistry for senior high school, In the past, the research content of hand-held sensing technology in high school chemistry teaching in our country is mainly focused on the research activ ities and in the current situation rou tine inquiry teaching cases is relatively missing. So this subject choose high school chem istry” experimental chemistry” [Shandong scientific press](Topic 3 Substance detection, Topic 2 Determination of the content of a component in m atter-- activity 2 Dete rmination of iron content in iron supplement) as m y content of study. The paper includes the following parts.The f irst part is in troduction.This part introduc es the backgr ound and signi ficance of the topic, and re views the relevant research results at hom e and abr oad.And innovation of this s tudy will be refined.The second part is the theoretical basis of the study. This paper expounds the constructivism theory, recent development region theory, cooperative learning theory and the effect of different theories in this study.The third part, based on the content an alysis and experimental research of "the determination of iron content in food " in textbook.Based on [PEP edition] [JiangSu education Press] [Shangdong Scientific P ress] textbooks "iron" to determine the longitudinal comparison, we draw conclusions:(1) the new curriculum textbooks pay more attent ion to select experim ent task material from the p erspective of life and to expa nd the study by the form of exploring learning.(2) set up on the new curriculu m textbook on experim ent content fro m confirmatory experiments to inquiry experiment of the system.(3) the new curriculum textbook on experiment teaching pay attention to the verification from the fragment knowledge skills into a sem i-quantitative and quantita tive method of system atic inquiry skills.(4) new textbooks will be the means of the experiment from a traditional basic means to m odern connotation char acteristics of sem i-quantitative and quantitative experimental method.(5) new curriculum textbooks focus on "application of knowledge to solve real life problems,improve the practice ability and innovation spirit.Originay and open space exp eriment teaching, is conducive to cooperative learning groups under the guidance of teachers.(1)[PEP edition]experiment textbook content settings qualitative and s emi-quantitative two parts, [Shandong Scien tific Press] textbook content settings experi mental semi-quantitative and quantitative section, which provides a selection of flexible space for teaching and teaching extends;(2) [Shandong Scientific Press] O n the basis of the textbook "visual m ethod" experiments and a "colorim etric sensor method" quantitative detection of the sam ple solution from processing m ore enhanced sk ills and process appr oach links specific experiment, systematic experimental choreography strong inquiry stronger, addition also allows students to unde rstand and experience the ro le of m odern analytical instruments at hand to solve the cas e around.(3)highlighted system atic the experiments to explore characteristics of the processing of the sam ple solution to strengthen the link process skills and specific test methods, try to im plement cooperative learning groups under the gui dance of teachers.(4)n ot only th e implementation of the principle of visual colorimetry knowledge, experimental skills valence iron determination, but also try to make students understand and experience in solving the case of modern life around hand-held an alytical instruments, well reflects the basic, select and Time in unity.Experim ental research part,The use of "color sensor" on the life of common foods and iron supplements iron content were measured series,the conclusion:(1)Iron supplements medicines and fungus, kelp and other foods readily available materials in life, and the high iron content, easy to dete ct;(2)The use of hand- held instrument to detect these high-speed rail technology to hi ghlight foods instrum ent in real tim e, accurate, intuitive an d quantitative characteristics in high schoo l chemistry experiment to better play the role of quantitative experiments to explore.Based on the above experimental measurement results and conclusions,Teaching made the following recommen dations:(1)Try to select to select the high iron content of the m aterial or iron supplem ent;(2)Process for dealing with the atten tion test sample;(3)Accurate knowledge of the requirem ents of the chrom inance sensor;(4)Focus on the division of labor and cooperation under the guidance of teachers in the experimental group.The fifth part is the design of teac hing case. Based on the conclusions and recommendations of the third part of the study, to the constructiv ism theory, recent development region theory, cooperative learning theory, information technology and curriculum integration requirem ents of th e times and the high school chem istry curriculum standards, The design of th e teaching case of "iron elem ent content determination in food" lesson was carried out.And proposed implementation strategy for supporting the implementation of the case.The sixth part, conclusions and ou tlook. The conclusions and recomm endations is to summarize the above parts of this paper; objective analysis of the deficiencies in the existing research, provide guidance and advice to deepen and im prove the follow-up study.