Research on the Teaching Reform of Practice Links in Higher Vocational Chemical Engineering

Fund Project: Jiangsu Province New Century Higher Education Teaching Reform Project Project (N50l).

Practical modules such as experiments, practical training, practice and design of the Journal of Yangzhou Professional University. At the same time, the corresponding teaching content, curriculum, teaching methods, teaching methods and assessment methods of each module are stipulated so as to change the past teaching model that uses subject knowledge as a system and ignores students' application ability and practical ability. Under the premise of ensuring that theoretical knowledge is sufficient, the appropriate reduction in theoretical class hours has dropped from the previous 64% to 50%, and the number of hours of practical teaching has been increased.

In practical teaching modules, political quality practical teaching includes entrance education (one week) labor (two weeks) and graduation education (one week) experiments including basic chemistry experiments (inorganic chemistry, organic chemistry, physical chemistry and analytical chemistry), professional class experiments, Comprehensive experiment and three sex experiment. Internships include an internship (week), a production internship (two weeks) and a graduation internship (three weeks). The design includes large-scale mechanical drawing work (one week), chemical equipment curriculum design (two weeks), chemical engineering curriculum design (two weeks) and graduation design (ten weeks). The training mainly arranged laboratory operation skills training (three weeks). Students are widely promoted as "multiple certificates of diplomas" and "a special multi-abilities" to enable students to become talents with multiple skills when they graduate.

The credit system is implemented, and the courses are divided into three types: "required courses", "limited elective courses" and "arbitrary elective courses." Students can choose courses according to social needs and personal development needs. This is to achieve inter-discipline knowledge penetration and to organize And optimize the students' knowledge structure to create conditions, so that the personnel training specifications from a single type to a complex type of development.

2 to optimize the curriculum system, highlighting practical teaching to optimize the curriculum system and teaching content with the integration of courses as a breakthrough. The organic synthesis of fine chemicals will be used as an integrated course for fine chemical engineering. It will integrate organic chemistry, organic synthesis unit reactions, experimental design and data processing, chemical search, and organic analysis, and arrange three weeks of comprehensive experiments to be finalized. Practice training. In doing so, it effectively reduced the unnecessary duplication caused by the categorization of courses, the low utilization rate of classes and the lack of practicality in teaching, and the flexibility, applicability and practicality of strong courses. At the same time, some less practical contents such as glassworkers were removed, and some new knowledge, new technologies, and new processes such as biocatalytic enzyme-catalyzed reactions, nanotechnology, and biochips were added to improve students' scientific research capabilities. The main line is the laboratory operation skill training, which integrates inorganic chemistry, analytical chemistry, general industrial instrument analysis, laboratory construction and management, organic analysis, and environmental protection, and integrates mechanical equipment and inorganic and organic fine chemical processes to improve students. Engineering awareness and professional skills. In addition, attention should be paid to the convergence between basic courses such as analytical chemistry and organic chemistry, and organic basic courses such as organic analysis, instrument analysis, and spectral analysis, and the traditional and mature techniques taught in specialized courses and the intake of new technologies and new knowledge should be handled.

3 take a variety of experimental teaching, to ensure the cultivation of students' hands-on ability Traditional inorganic chemistry, organic chemistry, analytical chemistry and physical chemistry, etc. have experimental courses, the experimental content is both duplicated and lack of contact. Through practice, a "basic chemistry experiment" course was introduced to synthesize the above-mentioned courses, aiming at cultivating student's laboratory hands-on ability, focusing on the basic operation principles and methods of chemical experiments, and emphasizing the cultivation and training of basic operation skills of chemical experiments. . Contents include basic knowledge of chemical experiments, basic operating techniques of chemical laboratories, basic measurement techniques, separation techniques, use of basic instruments, basic experiments, improved experiments, and research experiments. At the same time, the experimental class will be set up independently and assessed separately. This will not only strengthen the links between courses, but also improve the coherence of the practical aspects of teaching, and provide a new way for how to make full use of time and improve teaching efficiency in limited-time classes.

To create conditions to carry out a variety of experimental teaching, in addition to the traditional timing of the experiment, but also used open experimental teaching, students can do well before the experiment can be done, students with poor ability to do more proof experiments, through the experiment plus Sensual understanding, to improve the interest of learning, to deepen understanding; students with strong ability to accept research exploratory experiments, learn to think through experiments, ask questions, solve problems, and cultivate creativity. For example, the same "salt hydrolysis" experiment can verify the type of salt hydrolysis by confirmatory experiments; exploratory experiments can also be designed to study the factors that affect the hydrolysis of salts, and analyze the application of salt hydrolysis. This will enable students to eliminate dependence, actively participate in the teaching process, dare to question, be good at differences, divergent thinking, and develop good habits of research problems and problem solving. Another example is that the "Physical Chemistry" experiment is basically an instrument experiment. There are six sets of experimental instruments in each group. In the past, only one experiment was conducted at a time. Students performed experiments according to the teacher's arrangement. Students often had insufficient previews, hurries, and data copying. A series of questions. After the open experiment, we will debug all the instruments. Students can choose to do experiments according to the preparatory conditions. Arrange the time reasonably, as long as you make an appointment with the teacher to do the experiment. Can improve students' professional skills. Chemical mapping, chemical engineering, and chemical engineering are a group, but they can also be multi-grouped. They can be one or more.

Wang Zhengyuan: Research on the Teaching Reform of Practical Links in Higher Vocational Chemical Engineering We also established a Chemistry Interest Group to research and develop products that are closely related to production and life, such as dishwashing detergents, preparation and production of shampoo, and will be produced. The products sold were also sold to cafeterias and students for trial and improvement.

4Strengthening internships and practical training to improve students' professional abilities Internships and practical training are an important part of the entire practical process. We closely integrate teaching activities with production practices, social services, and technology promotion to cultivate professional abilities and professional ethics. Closely integrated to ensure practical teaching time. We will strengthen the construction of off-campus practice bases, cooperate with a number of large and medium-sized enterprises, and use their facilities and equipment to conduct internships and practical training. A professional steering committee was set up to hire enterprise engineers to serve as internships for professional steering committees and to participate in the company's production activities. Students were required to collect information during the internship to prepare for graduation design.

According to the State employment permit system and the practice qualification system, we require students to use the exclusion language and the computer must obtain the national grade certificate. The chemical engineering students must also have the laboratory analysis and occupation skill certificate. To this end, we have established an analytical laboratory skills training center to conduct in-depth research on training content and teaching methods. The training content mainly includes the preparation of various standard solutions, and the actual combination of water sample processing and analysis (and Water plant water quality testing requirements are the same) vinegar concentration analysis, trace formaldehyde analysis, etc. In the past two years, there have been two sessions of chemical engineering students who have conducted training and assessment of skill level certificates, and achieved very good results.Two students participated in 2002* In 2001, Yangzhou City's 100 thousand young workers performed the contest and both won the “Laboratory Operator” Excellence Award. Many graduates have been exempted from training by employers because they hold intermediate grade certificates.

5 do a good job of graduation design, improve students' practical application ability After completing all the theoretical and experimental courses, students graduate design, we broke the pattern of graduation design in the school, combined graduation design and employment, to the enterprise, experiment Internships such as workshops and other production internships are conducted by engineers, technologists, etc. outside the school, and are supervised by internship teachers. They are involved in the actual production process operations and management. At the same time, the internship teacher and the school teacher jointly determine the graduation design topic for each student according to the actual production problem so that the internship work and the graduation design content are unified. Students can use the thesis, experience, solutions to the problem, measures and design projects for graduation design. content. This can change the past in the school to engage in analog design, theoretical and practical disengagement, can not solve the problems of practical problems. On the other hand, through practical operation, students' practical ability and the ability to use theory to solve practical problems are also improved.

6Establish a set of quality assessment system to ensure that the teaching effect of the practical link in the assessment of the experimental class, using the assessment method of divisible into points, pre-graduation pre-exam score, operation-scoring in the experiment, post-experimental data processing and The quality of the experiment report, and finally the theoretical assessment and operation assessment of the experiment, the operation assessment using the lottery to determine the assessment of the subject to complete the experiment within a limited time, when the church wrote an experimental report. The usual and final assessment is 50%. The internship assessment is divided into three parts: on-the-spot assessment before the end of the internship, to allow students to explain the process and analyze the structure of the equipment; the assessment on the surface of the roll mainly includes the process principle, safety knowledge, etc.; Detailed internship reports, including what was heard, seen and thought of. Graduation design assessment includes design attitudes, which are usually disciplines, design materials, and response situations. They comprehensively consider students' professionalism, work style, practical ability, and innovation ability, and establish corresponding scoring standards.

7 Conclusion After 02 students' practice, the effect is obvious. From the subject of graduation, the subject of self-employment combined with students has twice as many questions as before. It has a wide range of types, both applied research and technological innovation. The scope includes applied chemistry, printing and dyeing, electroplating, batteries, pesticides, and environmental protection. From the graduate employment and work situation, Yannong Group accepts 6 graduates and has been on top of the trial for one month, and stated that it will continue to absorb more graduates in the next session, and some other units will also start hands on the students. Ability to appreciate. Of course, the reform still needs more practice verification and continuous improvement. It takes time. We will work closely with each other and continue to explore and practice.

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