Ma Debao Hemispheric Experiment Courseware

[design concept]

　　There are many aspects of human life and production to use the knowledge of atmospheric and atmospheric pressure, the understanding of atmospheric pressure, the existence of atmospheric pressure is the basis for learning about atmospheric pressure. Air cannot see, touch, usually cannot feel the existence of atmospheric pressure, so do a good demonstration experiment is the key to a good lesson. In this lesson, we have arranged many lively and interesting experiments to illustrate the existence of atmospheric pressure, which cannot only arouse students'interest, but also make students really feel that atmospheric pressure is around us.

　　In the teaching design of this class, pay attention to connect with reality, embody the idea of new curriculum standard & ldquo; from life to physics, from physics to society & rdquo; everywhere. Let the students apply the knowledge of atmospheric pressure to solve practical problems, through the students themselves list the phenomenon and application of atmospheric pressure in life, make students feel the universality of physical knowledge in life, and cultivate students'ability to use knowledge and positive exploration of emotional attitude and values.

[Teaching Objectives]

1. Knowledge and skills

(1) Through experiments, we know that atmospheric pressure exists objectively.

(2) Know the cause of atmospheric pressure.

(3) Know Torricelli experiment and its principle

(4) Understand that atmospheric pressure is related to altitude and weather.

2. Process and method

(1) Through demonstration experiments, students' observation ability and analysis ability can be cultivated.

(2) Through the study of Torricelli experiment, students can understand the equivalent substitution method of studying atmospheric pressure with liquid pressure.

(3) Through the analysis, discussion and explanation of atmospheric pressure phenomenon, the students' logical thinking ability, the ability of using knowledge and the consciousness of cooperation with people are cultivated.

3. Emotional attitude and values

(1) Cultivate students' interest in learning and stimulate their thirst for knowledge through demonstration experiments.

(2) Through the study of Torricelli experiment, the spirit of loving science is cultivated.

(3) Through the understanding of the application of atmospheric pressure, the close connection between physics and life is preliminarily realized, so that students can realize the influence of physics and its related technologies on social development and human life.

The existence of atmospheric pressure and the determination of atmospheric pressure

[teaching difficulties]: understand the principle of Torricelli experiment.

[teaching tools]: glass glass, cardboard, glass tube, rubber tube, funnel, jar, cooked egg, match, alcohol, water, syringe, Madenburg hemisphere, multimedia courseware, etc.

[teaching method]: observation experiment method, discussion analysis method, heuristic induction method, teaching method, etc.