| In the junior middle school biology teaching,the teaching pressure so that the majority of teachers in order to ensure the progress of the teaching,in concept teaching,teachers are still used by told directly gives the definition of,directly into the abstraction stage,on the concept of the formation and development process of understatement,lead students to the concept of the lack of deep understanding and hinder the effectiveness of teaching.Scientific experiments of the concept extraction plays an important role,to effectively construct biology concept through biological experiments,the author tries to through this study initially solved through biological experiments to promote the building of a biological concept of the student autonomy.This paper makes an investigation on the Xinyu City directly under the school existing biological experimental conditions,junior high school biology experiment teaching present situation and the student demand of experimental teaching.According to the results of the survey,according to the outline requirements of eighth grade numbering should open experimental demonstration of 15,most schools just launched the "were observed in plant cell(making temporary onion threading" experimental teaching,open rate of only 6.7%.The departure rate is very low.As a result of this is the school teaching classes,biology teachers and other objective reasons,there are junior high school biology tutorial nervous,experimental materials difficult to prepare other subjective reasons.To understand the Xinyu city junior high school biology textbooks in which the experimental operation.At the same time,through the analysis of the survey results,the experimental teaching and the concept of teaching exists the contradiction between the three aspects:1,experiment course opened low,which restricts the development concept teaching;2,the experimental process machinery arbitrarily,ignoring the penetration of the concept of teaching;3,the student learning interest and the reality gap,the concept of learning dull and tasteless.The author also expounds the concept of junior high school biology teaching and constructivism learning theory,and combined with the requirements of the new curriculum,refer to a large number of domestic and foreign literature,fully consider student's learning situation,Xinyu City directly under the school junior high school biology experiment conditions based,"biological core concepts in the construction of'junior high school biology experiment teaching method and its application.Designed to promote the student to set up the concept of biology of junior high school biology experiment teaching design and narrative the light on armadillidiumvulgare effect",the were observed in plant cell(making onion temporary mount)",the actions of feeding of Pieris rapae three teaching cases.At the same time,through literature research and Reflection on teaching practice,the preliminary construction of "self construction" of the core concepts of biology in junior high school biology experiment teaching method.To determine the teaching objectives,determine the teaching content,teaching process.Teaching implementation process involves three aspects,1,fully tap the students not only the existing resources,to mobilize students' enthusiasm is the premise to construct the concept;2,good experimental classes in order to guarantee the effectiveness of dialogue,the dialogue is to construct the concept of bridge;3,concept generation don't worry impatient for success,concept decomposition allows students to gradually build;4,not limited to the arrangement of the experimental materials,extend or improve testing ensures that the concept of effective constructionI want to try to combine the experimental teaching with the concept teaching through the teaching practice.To enrich the teaching form,initially construct the teaching design ideas of the students' autonomous construction of junior high school biology concept through experimental teaching. |
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