初中化学元素教案(国外英文资料).doc

初中化学元素教案(国外英文资料) Middle school chemical element teaching case The teaching goal Knowledge of the target You know that the outer electrons of the atom are layered; To understand the meaning of the atomic structure sketch; Understanding the concepts of ions and their differences and associations with atoms; Common sense introduces ionic compounds and covalent compounds. Ability to target By means of the imagination and description of the state of nuclear electronic movement and the comparison of atoms and ions, the students abstract thinking ability and logical thinking ability are developed. Emotional goal By means of the outermost electron number and elements of the nature of learning, lets the student realize that things are interdependence and mutual transformation between, preliminary to learn scientific abstract method; Through the study of the knowledge of outer electron configuration, let the students experience the regularity of the electron configuration. Teaching Suggestions Teaching material analysis Preliminary knowledge of this lesson extranuclear electron configuration, is in the study of the second chapter, on the basis of molecules and atoms extranuclear electron configuration of the preliminary knowledge and atoms. Form the knowledge system of atomic structure theory, this section is in the third chapter, the purpose to spread knowledge difficult, to give full play of the students space imagination. Through the introduction of the electron configuration of the first 18 elements. Make students understand before 18 elemental atoms extranuclear electron configuration rule, further understand the relationship between element properties and its atomic structure, as an ionic compound, the formation of covalent compounds and valence teaching provides a theoretical basis. Because the content abstract of the lesson, students are hard to understand, in the high school chemistry study will further on atomic structure theory, so this lesson knowledge only requi