论文部分内容阅读
为了使学生较好地掌握教材内容，培养学生的各种能力，我们必须加强实验教学，并结合教学引导学生独立去探究知识。 1．培养学生提问题的能力 学生实验能力的提高，是一个循序渐进的过程，这要求我们教师在平时应注意利用各种机会对学生加以训练和培养。问题和矛盾是调动学生积极性的一个重要方面，为激发学生的求知欲望，我们除了应保质保量地完成每一个实验外，更重要的是要注意结合教学内容提供的一些实验背景材料，由学生从中发现问题，提出问题，再由学生解决问题。如：在演示“观察血液成分”的实验过程中，让学生分别观察2支量筒内的液体；1支是加入抗凝剂未分层的血液；1支是加入抗凝剂已分层的血液，学生通过平时对血液的认识，问：“2支试管内装的都是一样的血液吗?”教师回答：“是一样的血液。”学生马上会问：“为什么出现这样的不同?”强烈希望追求答案，然后教师引导学生认真阅读血液的
In order to enable students to better grasp the content of teaching materials and cultivate students’ abilities, we must strengthen experimental teaching and combine teaching to guide students to explore knowledge independently. 1. Cultivate students’ ability to ask questions The improvement of students’ experimental ability is a gradual process. This requires that our teachers should pay attention to using various opportunities to train and train students in peacetime. Problems and contradictions are an important aspect of motivating students’ enthusiasm. To stimulate students’ desire for knowledge, apart from completing every experiment in a quality and quantity, it is even more important to pay attention to the experimental background materials provided by the combination of teaching content. Find problems from them, ask questions, and then solve problems by students. For example: in the demonstration of “observe blood components” in the experimental process, allow students to observe the liquid in two cylinders; one is to add anticoagulant non-stratified blood; one is to add anticoagulant stratified blood The students, through their usual understanding of blood, asked, “Does the two tubes have the same blood?” The teacher replied: “It is the same blood.” The student will immediately ask: “Why is there such a difference?” Pursuit of answers, then teachers guide students to read blood carefully