如何提高初中历史课堂教学实效

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按照新课改的要求,自主、合作、探究已成为新形势下课堂教学的基本特征,其宗旨是在新的教学理念的引领下实现减负增效,促进学生全面发展。为此,教师必须转变教学观念,着重培养学生自主、合作、探究、解决实际问题的能力,提高初中历史课堂教学的实效性。 In accordance with the requirements of the new curriculum reform, autonomy, cooperation and exploration have become the basic characteristics of classroom teaching in the new situation. Its purpose is to bring about negative effects and enhance efficiency with the guidance of the new teaching philosophy so as to promote the all-round development of students. To this end, teachers must change their teaching concepts, focusing on cultivating their ability to autonomously, cooperate, explore and solve practical problems and improve the effectiveness of teaching in junior high school history classroom.
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小学里我们已经用拼图(如图1)的方法得出:  三角形3个内角的和等于180°.  现在我们一起来探索证明这一结论的其他方法.  方法一:如图2(1),木条a与木条b平行,则有∠1 ∠2=180°.  如果将木条a绕点A转动,使它与木条b相交于点C,如图2(2),则∠2被分成两个角∠3和∠4,由平行线的性质知∠4=∠5.于是,在△ABC中,有∠1 ∠3 ∠5=∠1 ∠3 ∠4=∠1 ∠2=180°.