"Problem-based situation" is a real and vivid learning situation, which can be created with the help of chemistry experi-ment, social life, chemistry story and multimedia technology. Problem-based situation can vitalize class atmosphere and stim-ulate students' learning interest, so it can also cultivate students' innovative ability.% “问题情境”是一种真实、生动、直观而富于启迪的学习情景,在教学过程中,问题情境的创设,可以利用化学实验,借助社会生活、化学故事,运用多媒体技术等方法。在课堂教学中用“问题情境”来调控课堂气氛,不但可以让课堂氛围活跃起来,激发学生学习的激情和兴趣,引导其主动学习,培养其研究和创新能力。
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