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在中学化学教学中,除运用化学实验加强直观外,还经常采用各种直观教具,使化学教学内容形象化,趣味化,激发学生学习兴趣,引起学习动机,增强学生的感知、记忆。特别是一些抽象的复杂的原理,通过使用直观教具使学生易于形成概念和原理,从形象思维过渡到抽象思维,也有利于学生智力发展,能力培养。在上海市中青年化学教师教学评选活动中,很多教师创造性地运用直观教具手段进行教学,下面我们仅举几例略谈化学教学中直观教具的运用。
In chemistry teaching in middle schools, in addition to using chemistry experiments to enhance intuition, various visual teaching aids are often used to visualize the content of chemistry teaching and interest, stimulate students’ interest in learning, cause learning motivation, and enhance students’ perception and memory. In particular, some abstract and complex principles make it easy for students to form concepts and principles through the use of visual aids. The transition from visual thinking to abstract thinking also benefits students’ intellectual development and ability development. In the teaching selection activities of young and middle-aged chemistry teachers in Shanghai, many teachers creatively use visual teaching aids to teach. Hereinbelow, we will briefly discuss the use of visual aids in chemistry teaching.