"Interesting Life Clock" PPT courseware 2

Description

"Interesting Life Clock" PPT courseware 2

learning target

1. Learn new words independently and understand the meanings of words such as "energetic", "theft", "big pincer" and "flower".

2. Read the text correctly and fluently, and recite the first paragraph of the text.

3． Understand several biological rhythm phenomena and characteristics introduced in the text and the relationship between biological rhythm and daily life.

At dawn, birds sing on the branches to welcome the rising sun; as night falls, the lazy cat that has slept all day suddenly becomes energetic and stretches out its claws to pounce on the mice stealing in the dark; at midnight, spiders lurk in corners and trees. The branch is busy weaving its web. Morning glory blooms in the morning, purple jasmine blooms in the afternoon, and tuberose exudes a rich fragrance at night... Entering the colorful biological world, we will find that living things have their own life clocks, and the activities of many living things are based on carried out in circadian rhythmic cycles.

Biological clock science is a science whose task is to study the time-related periodic phenomena in living organisms. Biological rhythms are summarized based on experience, but they have their basis in physiology and molecular biology. Circadian clockology has nothing to do with so-called circadian rhythms. According to the length of the cycle, biological rhythms are divided into four types:

(1) Supercircadian rhythm, that is, a rhythm with a period longer than one day.

(2) Near-tidal rhythm, which follows the 12.5-hour tidal rhythm.

(3) Sub-circadian rhythm, which means it occurs more than twice a day.

(4) Near circadian rhythm, a rhythm close to 24 hours.

Operation

The text introduces interesting biological rhythms with examples. Interested students can collect more relevant examples outside class and share them with everyone. You can also read another book by the author of this article, "Interesting Biology".

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For more information about the "Interesting Life Clock" PPT courseware, please click the "Interesting Life Clock ppt" tag.

"Interesting Life Clock" PPT courseware:

"Interesting Life Clock" PPT courseware Learning objectives 1. Learn new words on your own and be refreshed with understanding. The meaning of words such as stealing flowers with large claws. 2. Read the text correctly and fluently, and recite the first paragraph of the text. 3． Understand several biological rhythm phenomena and characteristics introduced in the text..

File Info

Update Time: 2024-11-13

This template belongs to Chinese courseware Western Normal University Edition Fifth Grade Chinese Volume 2 industry PPT template

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