认识克和千克（Know grams and kilograms）.doc

认识克和千克（Know grams and kilograms） First, teaching materials Primary school mathematics gram and kilogram is the second grade 2 content. Asking students to recognize two commonly used quality units, grams and kilograms, is a preliminary attempt by students to quality units, and lays the foundation for the teaching of tons behind. From the students perception of rules and life experience, flexible handling of teaching materials, first recognize grams, and then recognize kg, and then understand the relationship between grams and kilograms and knowledge applications. Based on the content of this lesson, guided by the new teaching idea, combined with the experimental direction of the subject, the following teaching objectives are established: 1, students recognize grams and kilograms, 1 kilograms, thousands of grams, 1 grams, a few grams of a certain perception, understand the relationship between grams and kilograms, can carry out simple quality calculation. 2, continue to develop independent inquiry, cooperation and exchange of learning methods, encourage personalized learning awareness. 3, make the students fully realize that there are mathematics in life, and cultivate students problem consciousness and ability to solve problems. The emphasis of this lesson is on the understanding of kg and gram, and the understanding of the relation between them. The difficulty is the knowledge of grams. Two, teaching methods and learning methods Methods: this lesson teaching object is the second grade students, although they have developed a habit of learning, but because of the small age, still active, playful and curious, according to this characteristic, in order to seize their interest, stimulate their curiosity, teachers mainly to Situational Teaching Method in teaching, students love familiar with the game situations, situations, let the students to feel, find, get new knowledge, but also the use of heuristic teaching, visual teaching and other teaching methods, to create a go