“Rational Addition” Teaching Material Research Base On Discovery Learning

Following the comprehensive process of new-round course reform, there is a change in status for the teaching material in classroom teaching. It has changed from”Bible” major status to the material of serving for classroom. On the one hand, the writing of teaching material changed from presenting the knowledge purely to showing the knowledge development process; on the other hand, the teaching material make column design through “thinking”、“exploring” 、“thinking a little bit”、“acting a little bit” to encourage the students to be involved in the knowledge discovering process, in order to develop the students’ exploring mind. Even so, the teaching material is not universal toll, facing the students who have difference in perceive level, family background and learning habit, in the premise of students’ discovery learning, there should be one teacher to make one more step processing for teaching material in daily teaching according to their own teaching group. for the students, the rational number is the first expansion for the number collection, make research for the new collection must need to study the element operation, so “rational addition” is the basic and important course in the operation of rational number group, it requires to achieve”master” level according to course standard.In view of this, this text will set “rational addition teaching material research base discovery learning” as research topic. First, base on the current research result, fixing the research foothold. Second, testing the problems what happened during the students studying rational addition in order to make teaching material processing and improvement by the method of experimental study; at last, providing the teaching advice for “rational addition ” base on the summary of students’ “rational addition” teaching material used for discovery learning. Through research, the conclusion as follows: 1. Help students to distinguish operative symbol and the nature of symbol;2. Showing the number axis after listing the addition equation; 3. Providing the method for students to solve the problem during the procedure of teaching material processing, namely negative number meaning.Through research procedure, the advice for “rational addition” as follows: achieve higher level for the teaching of negative number meaning; emphasize the strictly distinguishing for operative symbol and the nature of symbol; reasonably arrange the number axis showing; reasonably design the students’ learning style.