| With the development of the popularization of computer andinformation technology，the algorithm as an important basis ofcomputer science and mathematics and its application is animportant part, with the social development, the role in science andtechnology is bigger and bigger，the algorithm also becomes thecharacters that our modern citizens should have■Our countryenacted in2003the high school mathematics curriculum standard(expeirment)，the algorithm as the specific teaching content into themiddle school mathematics teaching mateiral.But y the algorithm is a new content, for most of the teachers itis a stranger, no ready-made experience to design lessons from thepractical teaching, many teachers have understanding deviation inthe algorithm off the teaching goal of knowledge, so the algorithmteaching situation is not ideal. Based on this, the study first analysesthe algorithm present situation, on the teaching of basic knowledge of the domestic and foreign research； Secondly，guided by thevariation theory, explore the key properties of algorithm content，design variation pattern to guide the teaching of algoirthm; Finally,through the teaching practice, investigate and analysis on theteaching effect.In action, on the basis of study, this study get the followingconclusion;1, guided by the variation theory, the design of theoriginal scheme of algorithm have a significant role in promotingteaching and丨earning；2,"analysis learning content, find out the keyfeatures of learning content，design variation pattern" this process isthe basic steps to guide teaching by using variation theory yunderstanding and grasping this method helps to teaching in thefuture for the teachers.3, the algorithm teaching, first of all, studentsneed to丨earn to "feeling", through the example to comprehensiblealgorithm thought; Next， let the students learn to feel furtheralgorithms by imitating； Finally，be operated personally, andstudents can draw diagram of the algorithm. |
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