Madebo hemisphere experiment courseware

[design concept]

In many aspects of human life and production, we need to use the knowledge of atmosphere and atmospheric pressure. Understanding and feeling the existence of atmospheric pressure is the basis of learning the knowledge about atmospheric pressure. The air can't be seen or touched, and the atmospheric pressure can't be felt at ordinary times, so the key to this lesson is to do a good demonstration experiment. In the teaching design of this lesson, many vivid and interesting experiments which can explain the existence of atmospheric pressure are arranged, which can not only arouse students' interest, but also make students feel that atmospheric pressure is around us.

[teaching objectives]

1. Knowledge and skills

(1) We know that atmospheric pressure exists objectively through experiments.

(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 experiment, students' observation ability and analysis ability are cultivated.

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

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

[key points of teaching]: the existence and determination of atmospheric pressure