The Investigation Of Biological Preconception In Grade Seven Students And The Teaching Of Conceptual Change

In the scientific concept of learning, students do not mind a blank into the classroom, they through a variety of experience and understanding, and the long established thinking, for the want to learn things, have their own concept, which is the prescience conception, Jane said the preconception. These ideas and scientific concepts is not only have the connection also has the difference, these concepts will affect students’learning about scientific concepts, but the author thinks that if these concepts are reasonable use, will have a positive meaning for science concept learning, this is the conceptual change teaching. Especially under the background of the new curriculum standard and new materials, to the junior middle school students biology pre scientific concept of investigation before the formal acceptance of biology education, has important theoretical value, and according to this study is presented, which can effectively improve the classroom efficiency of conceptual change strategies in teaching, and has more application value.This study use Li Gaofeng to prepare "the junior middle school biology pre concept questionnaire" exploration of the No.82middle school in Tianjin285seven grade students of biology the prescience conception and to students of science concepts have degree (questionnaire score) and gender differences were statistically analyzed, according to the contents of were seventh grade student common the prescience conception of summary, and the use of " the prescience conception formation reasons of self survey" survey form the reasons for the formation of concepts. The results of the study show that:before concept exists generally in the seventh grade students, the average score of285people for23.48, with a high level, its content relates to the various aspects of the biology knowledge, scope is wide; pre scientific concept of degree of presence of unrelated to sex, no significant difference; for most of the prescience conception of students did not know the source, is in front of the living learning experience. Secondly, the score the highest is science and education programs, can be seen in the impact of modern social media for learners influence is very big. The former concept of teacher influence in the correct and wrong topic ranking of the different, also explained the importance of the formation of the concept of formal science to students.Then according to the survey results, the author puts forward using conceptual change teaching guided by the learning plan teaching strategy, finally, the conceptual change research for "a lifetime of angiosperms are performed. After the results of the test, there are three classes in the two courses after the test results of the experimental class is higher than the control group, the difference is more remarkable. There is no significant difference in the course of a lesson, the author analyzes the effect of the concept change teaching because of the differences in teaching content.