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加强实验教学,可以帮助学生形成化学概念,理解和巩固化学知识,以及掌握实验的技能。为了更好的培养学生的观察,分析、综合表达能力,在化学教学中必须加强和重视演示实验和学生实验。演示实验是面对全班学生的、教师起着示范和表率的作用,教师每次演示的效果都对学生起着潜移默化的作用,所以在演示实验中应该做到万无一失,而且要操作精练、装置简单、现象明显、安全可靠。至于学生实验那就更应该考虑到安全和效果问题。
Strengthening experimental teaching can help students form chemical concepts, understand and consolidate chemical knowledge, and master experimental skills. In order to better develop students’ observation, analysis and comprehensive expression skills, demonstration experiments and student experiments must be strengthened and emphasized in chemistry teaching. Demonstration experiment is to face the whole class of students, teachers play the role of demonstration and example, the effect of each demonstration of the teacher plays a subtle influence on the students, so in the demonstration experiment should be foolproof, and to operate the refining, device Simple, obvious, safe and reliable. As for student experiments, it should take into account safety and effectiveness issues.