Chemistry is a subject based on experiments, and teaching should be based on experiments. Query type
Experimental class is a good form to guide students to explore. The characteristic of this course is to make full use of classroom experimental conditions and guide students to carry out inquiry learning. The links of the whole course mainly include the following steps:
First, introduce new lessons-cleverly set suspense and stimulate interest. Generally speaking, it is closely related for teachers to create problem situations.
Student life department, to make students interested in what they have learned. Through chemical stories and chemical magic, we can arouse suspense, let students think, analyze and find "why", and let students be full of interest and immerse themselves in the learning atmosphere as soon as they attend class.
Second, ask questions and collect information-induce inquiry and stimulate interest. Teachers guide students to ask questions and tasks. All questions should have certain thinking value, openness and divergence, so as to encourage students to think deeply from multiple angles and form multiple answers, and on this basis, guide students to make bold inferences, then design experiments according to different inferences to verify whether their inferences are correct, and finally draw conclusions from the experiments.
Three, put forward the hypothesis, group discussion and evaluation. Students have many opinions on the above problems. At this time, they can ask questions in groups, and students can find information from each other to demonstrate their views. At this time, teachers should grasp students' meaningful assumptions in time, start students' thinking and stimulate students' curiosity and thirst for knowledge.
Fourth, design an experimental scheme to verify your hypothesis-discuss and dispel doubts and increase interest. Students learn by studying.
Some problems have been solved, but at the same time, some new problems have emerged or been put forward. In the process of exploring new problems, students will give feedback on what they have seen, heard and been inspired, and even argue endlessly. At this time, teachers should use appropriate guidance and instructions to let students fully express their opinions, conduct heated discussions and serious thinking, and make the inquiry deeper, so that the knowledge acquired by students will be more comprehensive and profound. In the inquiry experiment class, it is advisable to work in groups of four. There should be a clear division of labor and mutual cooperation within the group. According to the inquiry task, discuss and determine the experimental scheme together, and then according to the division of labor, some people do the experiment, some people fill in the experimental report, some people summarize and so on. This kind of activity is different from teachers' demonstration experiments and simple students' grouping experiments, but highlights the characteristics of students' active participation, independent experiments and cooperative exchanges. It is a process in which students actively acquire chemical knowledge under the guidance of teachers. It is conducive to improving students' ability to find and solve problems, as well as their ability to collect, analyze and use information.
Verbs (short for verb) communicate and express. Expression and communication are also the climax of inquiry learning. At this stage, students should summarize and refine their own achievements and communicate within and between groups. The experimental group reported the experimental results, students questioned each other's evaluation, and the teacher asked questions to form a conclusion. Through communication and discussion, students can share the results of inquiry together, which is an indispensable link in the inquiry experiment class.
Sixth, feedback and error correction. Teachers should carefully choose exercises suitable for this class, so that students can consolidate and apply what they have learned, and at the same time, they can know the students' mastery in time, which is convenient for teachers to adjust themselves.
Seven, review and reflection. In this class, the students reviewed their own learning contents and experiences, so that everyone could share the happiness and gains in the learning process. At this time, teachers should properly infiltrate ideological education and emotional education.
In short, the experimental class has high requirements for teachers, so it is necessary to prepare lessons carefully before class, create scenarios by using chemical stories and magic experiments, and stimulate students' interest; Carefully design experiments to develop students' ability and cultivate their innovative ability; Connecting with practice, touching the scene and stimulating students' thirst for knowledge.
(from the network)