Chemical study of the resonance effect three days seminar

Not only provide students with junior high school chemistry education needs to adapt to the future development of basic chemical knowledge and skills, but also train students to analyze problem-solving abilities. To evaluation of this ability, though not the only way to test, but a core important way, while pass the exam the students can master to master, and timely feedback to teachers so that you may say. during the course of the examination and evaluation, we found a third-year chemistry students in learning the laws of common phenomena, simply put, is the resonance phenomenon . Physics there is a "resonance", but the development of modern sociology has been found in the field of sociology and management but also the existence of "resonance effect", ie society, people tend to accept their lives and interests, hobbies, areas of mutual agreement knowledge, and converting it into a learning ability, according to this, it can be concluded: students are more easy to grasp and their thinking, logical consistent ability to the curriculum, while difficult to grasp the characteristics of their thinking and inconsistent course, which side branches is an important reason for students. However, within the same course, there are similar differences, in order to further understand the law of third-year chemistry learning, the author has conducted some careful thought and Research.

Engaged in teaching third-year chemistry course, the author of nearly four years of student achievement through the distribution analysis, distribution of student achievement found that there is a clear "resonance" phenomenon. The following is a transcript summary analysis of the situation:
This table lists we can not immediately find the problem, after careful analysis of the data, we can find in nearly four years of student achievement, the first semester mid-term examinations divided equally to the first semester final exams with a total score increased sharing 10 percentage points, while the second semester period is nearly 5 percentage points, the second mid-term school is 5 percent, which shows that in the first half of the semester, second semester mid-term student achievement in general are rising rapidly, it should be a kinds of factors at work. After three days of PEP and the teaching of chemistry taught in the schedule parameters than we can find:
After more that, from the fifth unit, "chemical equation", students have a more significant performance improvement, which caused us to think. Fifth element "chemical formula" is characterized by strong regularity, the same law repeatedly , which allows us to draw such a conclusion: students to accept the teaching of regular, regularity is easy to learn by analogy, which is often the breakthrough to improve student achievement.

To verify this conclusion, in April 2009, with these questions, I distributed a questionnaire to allow students to evaluate these four parts, we found that students' responses are as follows:
We can clearly find that, starting from 5-8 units, the acceptance of chemistry students rose to the level of a leap, "not acceptable" and "very difficult to accept" a significant reduction in the proportion of this course, student achievement is gradually improved results, but also reflects the subtle psychological changes in students: improve the performance and greatly enhanced the confidence of students in learning chemistry.

Then the students to master the same course content within the different degree of interest in change, give us what inspired him? Sum up the following points:
First, to improve student achievement and psychological chemistry, interest, and consistent with the "resonance" relationship, that is, performance improved, interest also has improved, which in turn can promote further study of chemistry, it should pay attention to classroom on the difficult cleaning. in the past in order to allow more review time, the majority of chemistry teachers desperate to catch the progress of teaching, resulting in some students of knowledge, indigestion, and even some of the students keep up with the chemical loss of interest, or loss of confidence. Therefore, we need to properly control the progress of the dignified clear emphasis on the teaching objectives, and classroom prep emphasis on students learning efficiency, which to some extent, reduce the backward side, learning to avoid the premature chemical polarization.

Second, the regularity of the phenomenon as the entry point, the phenomenon of great importance to students of regular training, continue to enable students to improve the "chemistry is very simple," "very laws of chemical" sense, which varied in the Teaching of thinking, to guide students replicability, by analogy, learn and use, the ability to migrate to students so that students encounter a new fear, panic, to overcome the psychological fear, especially in the third chemistry review phase, enabling the students to restore a large number of low-level interest in chemistry. In the review, we should focus on students' interest in learning to cultivate high-level, so that they reveal the chemical principles, exploring such changes of substance have desire to learn each student's level of interest in learning and development is uneven, and some do not some experience from low to high development is the responsibility of teachers at different stages of learning for students interested in mining and training, but also to the low level of interest and help to remind students to a higher level, so that students can be full of curiosity in learning heart and desire to explore. refresher so that students learn to re-cognitive, experiential learning content, process, method, and so the specific aspects of the experience, learning the door is open to every student, to give recognition to inspire confidence in students a step into the science hall. Likewise, the scientific review, the mind, allowing students academic performance is not ideal to restore confidence in the study of chemistry, to overcome learning difficulties, access to successful learning experience. Links to free download http:// www.hi138.com
Third, get regular content of the examination is an important way of using this correction, this method can improve student understanding of the law of the proposition to reduce the chance of mistakes the student learning in chemistry biggest enemy is the "forgotten "To overcome the forgotten, effective weapon against one of its" understanding ", the second is" repeated. "want to rapidly improve performance, most intelligent way is a" serious error correction. "not simply change the A C, and is to figure out A, B, D Why are not right, and C why right, and find the root cause of the error which is the point of knowledge or problem-solving methods did not grasp the omissions caused, and then look for similar problems and then strengthen training. Training, we use "comments about the simulation tests plus" approach, to guide students to sum up some good problem-solving methods and techniques, while analyzing his own shortcomings in a targeted manner to improve, focus on improving students' exam skills, develop a good attitude . practice papers for students, in addition to correcting serious comments about, but also attaches great importance to urge the students to error correction, the general problem of surface volume correction, a typical problem-specific correction of the error-correcting the student's habits and the ability of self-correction in this continuously during the distillation, the students examination skills and abilities are constantly temper gradually improved.

Fourth, the emphasis on the class of "small learning environment," the construction, use of achievements of outstanding students to take the lead role to help the poor excellent form regularity results "resonance" effect. In addition, through a natural, appropriate review to arouse students' learning scenarios memory, not through exercises to strengthen the memory, strengthen the memory of the short-term effects, not only makes learning chemistry a bit utilitarian, but also result in significant polarization of students, students with poor memory and learning is easy to lose confidence in teachers' knowledge of memory should be placed at a certain point scenario so that students are interested in constantly recalled by the scene point of existing knowledge, and often forgotten point in good repair and improve the memory quality review of the creation of scenarios to cause students do not pay attention to the problem, not the passive acceptance of the learning task.

Fifth, the emphasis on the review stage of the Network access, the formation of a comprehensive system of knowledge structures present review of junior high school chemistry problems, mainly over-reliance on teachers to review the content or completely abandon the teachers are busy doing problems, neglect of reflection and review Summary, review status of passive, not targeted, review the pursuit of short-term effects of training to engage in sea tactical, high rate of repeat questions, the students have learning disabilities, decreased interest in learning, under the pressure of the examination, psychological quality of students has become fragile, weak-willed. through effective review, students are no longer knowledge, Information repeatedly recipients, but is committed to more comprehensive use of knowledge to solve practical problems of the explorers. refresher course, or should be learner-centered, teach students to learn, teach students creation, so that students have life-long learning, the core is to develop the quality of modern science, consciousness and creativity and a pioneering talent.

The new curriculum requires us to be concerned about students overall quality of training, including knowledge and skills, processes, capabilities and methods, emotions, attitudes and values ​​and so on. The previous three days of discussion of chemistry teaching, too much emphasis on teacher-based model, ignoring the Students accepted model discussion, is a relatively inefficient way. Chemical study of three days by a "resonance effect" of the application can continue to improve their ability to observe nature's ability to see through the appearance, the concept of deepening the students about the chemical nature, principles of knowledge, can contribute significantly to the improvement of the quality of teaching , but also help students learn to master the chemistry of the "subject of thinking", to improve scientific literacy.

References
[1] history forever. Chemistry teaching thinking skills in students [J]. Physics and chemistry students (Teaching and Learning, 2008, (09)
[2] Zhong Rongji. Third-year chemistry teaching experience [J]. Primary and secondary audio-visual (the second half of 2008, (01
[3] Sun Rongmei. On third-year chemistry Research study [J]. Exam Week, 2008, (15
[4] ZHANG Ying-hua. The idea of ​​classroom teaching chemistry [J]. Primary and secondary teaching and Research, 2009, (01
[5] Huang Ling. Third-year chemistry review [J]. China's education Technology and equipment, 2008, (16
[6] Wang Xuehong. Some of the third-year chemistry textbook view [J]. Primary and secondary teaching and Research, 2005, (04
[7] Cai Wenhua. The concept of teaching junior high school chemistry [J]. Physics and chemistry students (teaching and learning. Research edition, 2006, (05)
[8] Li Sheng make. On the third-year chemistry review class [J]. Technology Information, 2008, (25
[9] Zhang Zhengyu, Yangwei Song. Under the new curriculum of junior high school chemistry teaching strategies [J]. Technology Innovation Review, 2008, (36 Links to free download http://www.hi138.com

Links to free download http://www.hi138.com