"Cicada at Dusk" PPT courseware 2

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"Cicada at Dusk" PPT courseware 2

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Why is it called "Cicada at Dusk"? What does "twilight" mean? Does it mean time or something else?

Dusk not only represents the dusk in time, but also represents the twilight of life.

What knowledge about cicadas can be introduced through these natural paragraphs?

In the first paragraph (natural paragraphs 1 to 3), the author caught cicadas when he was a child and learned the reason for their loud calls.

In the second paragraph (natural paragraphs 4 to 6), the writer knows what cicada larvae look like through the game of catching cicadas.

In the third paragraph (natural paragraphs 7 to 9), the writer learned more about cicadas and understood their life through reading.

The fourth paragraph (paragraph 10) writes the author's description and praise of the cicada.

Read paragraphs 1-3 silently and think:

What does "The noisy cicada forest is more quiet, and the birdsong mountain is more secluded"? What does it mean? What does it mean?

The chirping of cicadas makes the woods more peaceful, and the chirping of birds makes the valley more secluded. The author quotes Wang Ji's poem to write about cicada. This shows that the cicada’s cry can be heard in summer and is the loudest.

What is the reason for the loud chirping of cicadas? How did the author know?

Cicadas do not sing with their mouths, but with drum-shaped vocal organs on both sides of their abdomen. Its articulator is very clever, and there is a cavity next to it, which can amplify the sound through resonance. The author caught the cicada, held it in his hand and looked at it, and then he realized it after careful observation.

Study the second paragraph of the text

Find out the sentences about catching cicadas in the article and experience the fun of catching cicadas.

"So we made an appointment to bring flashlights and go to the woods when it was just getting dark. ... Cicadas are our happy childhood companions. Almost every child has caught cicadas."

Study the third paragraph of the text

It turns out that the cicada had a long "childhood" and spent it underground in the "darkness"! No wonder it will sing loudly to the sun once it gets out of "hell".

Ecological behavior of cicadas

Cicadas, like other homopteran insects, have typical piercing-sucking mouthparts. They are all herbivorous insects and usually live on the sap of various parts of plants. Except for a few smaller species that suck sap from the leaves, most of them are accustomed to perching on the stems of plants and piercing their mouthparts into the bark to suck sap.

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"Cicada at Dusk" PPT courseware 3:

"Cicada at Dusk" PPT courseware 3 I can read the wings, abdomen, cicada sheds eggs, lonely burrow, gluten paste, sucks distant birdsong, delicate fall, crawls in darkness, ingenuity, thunder and thunder in all directions. Learning requirements: Read the text freely and softly (paragraph 13) 1. Find. .

"Cicada at Dusk" PPT courseware:

"Cicada at Dusk" PPT courseware Birdsong Gluten Abdomen Laying eggs Crypt Delicate Wings Juice Once Benefit Falls Distance Paste Flashlight Thunder shakes in all directions Darkness Ingenuity Learning Objectives 1. Continue to study the text and learn other knowledge about cicadas. 2. Knot..

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Update Time: 2024-11-02

This template belongs to Chinese courseware Version A, fourth grade Chinese language volume 1 industry PPT template

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