Reflections on the Teaching of Breathing and Health

Through the study of the last lesson, students can know that breathing includes exhaling and inhaling, and they can also feel the changes of our senses when exhaling and inhaling, such as the expansion of the chest and the contraction of the abdomen when inhaling. In that class, students are mainly required to measure the number of breaths in a quiet state within one minute, and then measure the number of breaths after different exercise States to feel the change of breathing. For example, breathing will become faster after exercise, but the corresponding breathing will also slow down.

Students understand the relationship between respiratory function and physical health by counting and analyzing the number of breaths in different States, which leads to thinking about healthy life.

teaching process

1. Measure the number of breaths when we are in a calm and moving state for one minute.

2. Question: Comparing the data, I found that "the number of breaths increases during exercise" and asked: "Why can exercise speed up breathing?"

3. Reading materials: instruct students to read bar charts.

4. Summary: Breathing is to let gases containing oxygen enter the body continuously, and at the same time expel gases such as carbon dioxide that are not needed by the body, so breathing is gas exchange.

During exercise, the body needs more oxygen and produces more carbon dioxide and other gases, so breathing will be accelerated.

5. Discussion: Breathing time is different in different states. What is good for our health? This question is too vague. It can be changed to: Is it good for your health to breathe faster after exercise? )