How to do a good biology laboratory class

Seventh grade students, who have just entered junior high school, are initially exposed to professional learning of biological science knowledge, and are not familiar with or skilled in basic laboratory operations. Biology as a natural subject based on experiments, the experimental part of the study is the focus of the entire biological learning content, experimental classes, is conducive to the consolidation of students on the consolidation of basic knowledge and learning, but also more closely related to life, can guide the students' learning, life, and even future work. Therefore, when teaching biology, we should pay attention to experimental teaching. After my years of biology teaching practice, to do a good job in biology laboratory class, should start from the following aspects. Specificity of objectives. In the teaching design, to develop detailed teaching objectives. For seventh grade students, simple and direct teaching objectives are more likely to make them clear what they should do in this class. For example, when developing the teaching design of Observing Plant Cells, students should know that the as long as the goal of this lesson is to learn the basic method of making a fashion slide, recognize and clarify the basic structure of plant cells, initially learn to draw a sketch of the structure of plant cells, and be able to use a microscope to observe a fashion slide made by themselves. With the goal, students will be able to understand what to do and what to do in this class. Make adequate preparation. Adequate preparation is the basis for a good experimental investigation class. Before the class, let the students pre-study, make a good preparation of knowledge; the teacher to make a good preparation of experimental equipment, drugs and other preparations as well as preparation for accidents (you can let some of the students to participate in the enhancement of learning interest). To pay attention to the standardization of the experiment. Experimental skills are seriously lacking in seventh-grade students, for example, the use of a dropper, in my opinion, is a very simple thing, but the operation of the students is not ideal, the teacher should explain in detail to the operation of each finger, in order to let the students learn. Throughout the laboratory class, the teacher's operation should be standardized, correct, and give students accurate demonstration. In the experimental teaching, it is necessary to find, point out, and correct students' irregular operation in time, which is conducive to cultivating students' good experimental habits. Utilize students' learning initiative. Learning modern science and technology, the use of modern educational technology, give full play to the role of the main body of the students, that is, the teacher to create teaching scenarios, leaving students more independent, inquiry, cooperative learning time and space, so that students can participate in as much as possible in the production of knowledge, the development of the process of knowledge, change the passive acceptance of knowledge for active discovery of knowledge, mastery of knowledge, so as to achieve the goal of cultivating the learning ability of the students and the ability to create. Realize the dominant and the main role of the organic combination of "teaching" and "learning" of the harmonious unity. Timely evaluation of students. In the experimental investigation, students' experiments will have success and failure. Successful to be encouraged in a timely manner. Failure, failure will always have success, the teacher can encourage students from the success of more hands, bold hands, and analyze the reasons for failure with the students to the final success. To let students feel the fun of hands-on. Let students set up their own experiments. Learning doesn't end when the lab class is over. Self-constructed experiments are a continuation of a class and are conducive to enhancing students' sense of creativity. Teachers should provide students with help and support for medicines, equipment and so on. Of course, to do a good job in a successful biological experimental investigation class, there are many factors, but also need to be taken seriously, think positively and try boldly.