电化教学具有直观、形象、生动,不受时空限制等特点,它对实现教学过程中最优化具有显著作用。 一、电化教学形象、生动,有利于激发学生的学习兴趣 投影、录音教学的特点可根据教学内容的需要,使被感知的学习对象,不受时间、空间的限制,反复再现。它有助于吸引学生注意,激发学习动机和提高学习兴趣。特别是以其多样化的信息,作用于学生各种感官,促进视听结合,多种接受器官并用,外部分析器与中枢神经系统紧密联系,使感知、思维、想象、记忆等心理活动,都相应地处于积极状态。所以投影、录音教学作为一种教学手段,对语文教学中的感知作用,能极大地调动学生学习语文兴趣。如在教《珊瑚》一课,尽管课文用了许多生动的语言,介绍珊瑚的一些情况,但学生毕竟不能到海底去观赏更想象不出珊瑚的形状和颜色,以及珊瑚是怎样形成的,所以单靠教师讲解,学生会感到乏味。但采用投影教学,情况就不同了,投影一放,学生看到五颜六色、形状各异的珊瑚,随之再配上录音朗读,学生 Electrification teaching has the characteristics of visualization, vividness and freedom from the limitation of time and space. It plays a significant role in optimizing the teaching process. First, the image of electrification teaching is vivid and conducive to inspire students' interest in projection of learning and recording characteristics. According to the needs of teaching contents, the learning objects to be perceived can be repeatedly reproduced without being limited by time and space. It helps to attract students' attention, motivates their learning and increases their interest in learning. In particular, with its diverse information, it acts on various senses of students, promotes the combination of audiovisual and audiovisual services, and accepts multiple organs together. External analyzers are closely linked with the central nervous system and respond to psychological activities such as perception, thinking, imagination and memory In a positive state. Therefore, projection and recording teaching as a teaching method can greatly mobilize students' interest in learning Chinese because of their perceptual effect on Chinese teaching. If teaching “Coral” a lesson, although the text uses many vivid language to introduce some of the coral, but after all, students can not go to the sea to watch more imagine the shape and color of coral, and coral is formed, so Tutoring alone, students will feel boring. However, the use of projection teaching, the situation is different, a projection, students see colorful, different shapes of coral, accompanied by recording aloud, students