The Research On High Students In The Trasformation Of The Chemical Pre-scientific Concepts (Compulsory One)

Fore-scientific conception, also known as pre-concept, refersto the learner accumulate some of the lack of a general andscientific experience through long-term experience in real life anddistinguish between learning and obtain some perceptual impressionbefore accepting formal scientific education, which are contraryto scientific knowledge or different ideas and rules. Studies haveshown that Students is not a piece of white paper before learningchemistry course. Instead of in my mind there are rich knowledgeand experience, which is the pre-conception. The chemistrypre-conception has characteristics such as universality, stubbornsex, concealment, no coherence, so it is not easily spotted byeducators and aware of that. Students often under the influence ofpre-conception when they are learning new knowledge. Thepre-conception derived from the personal experience of everydaylife, professor of way of the teacher and many factors such as theinfluence of between disciplines. The high school curriculum is animportant stage for High students to study, so teachers need tounderstand a student who is owned the chemistry pre-conceptiones,adopt a certain strategy and targeted teaching, help studentseffectively make the conception of change. In this paper, on the basis of the theory of constructionism,in high school chemistry compulsory teaching material as theresearch object, investigated the students of chemistrypre-conception. The survey found that students in the learningrequired before the chemistry pre-conceptions are mainlyconcentrated in the amount of substance, oxidation reductionreaction and ionic reaction in three aspects. Before theunderstanding on the basis of this study and makes a deepinvestigation on the three aspects, adopted a strategy of certain,such as the creation of problem situation cognitive conflict, guidestudents to discuss and self-monitoring, timely feedback learningand the concept map, for conceptual change teaching. Achieved acertain effect, hoping to help compulsory one’s teaching.