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最近,浙江省第十届高等学校师范生教学技能竞赛(普通组)在浙江师范大学举行,高中数学组共有7位选手,比赛方式是模拟教学,课题是“点到直线的距离”(提供的教材是人教社A版~([1])).与前六位选手差异较大的第七位选手的设计是按照点P与直线的不同位置关系(分点P是否在直线上),以及当点P不在直线上时,对直线Ax+By+C=0(A,B不同时为0)中A,B的特
Recently, Zhejiang Tenth National Normal University Teaching Skills Competition (Normal Group) held in Zhejiang Normal University, a total of high school mathematics group of seven players, the game mode is simulated teaching, the subject is “point to a straight line distance ” ( The teaching materials provided are: People’s Education Society, Version A ~ ([1]). The seventh player with big difference from the first six players is based on the different position relationship between point P and straight line ), And when the point P is not on a straight line, the straight line Ax + By + C = 0 (A, B not simultaneously 0) A, B special