反证法教学的价值与建议

Reduction to Absurdity’s Teaching Value and Suggestions

反证法能训练逆向思维，促成数学思想方法、培养严密思维、渗透数学史，从而有效地丰富数学情感、态度，价值观。教学要分阶段、练反设、重思想方法．归类型。

Reduction to absurdity can train regressive thought,facilitate mathmathcal.thainking method;develop,cllse,thought,Permeate. mathmatical history, so we can enrich. Mathematical emotion, attitude, valuable, opinion, Teaching should analyze stage, reduce, thinking method, sun yp,type.