"Silkworms are growing up" Let's raise silkworms PPT courseware

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Hunan Education Edition Third Grade Science Volume 2	pptx	6 MB

"Silkworms are growing up" Let's raise silkworms PPT courseware

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Upload Time: 2024-11-20

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Description

"Silkworms are growing up" Let's raise silkworms PPT courseware

learning target

1. Understand the general process of growth of silkworm larvae and the changes that occur.

2. Know some normal physiological phenomena during the growth of silkworms.

3． After accumulating some experience in raising silkworms, you can realize that the growth of silkworms is closely related to the surrounding environment.

Feeding and care of silkworm babies

1. Feed fresh mulberry leaves. Silkworms that have just shed their skin can only eat young mulberry leaves.

2. Frequently remove feces and residual leaves to keep the silkworms' "room" clean.

3. Maintain ventilation and avoid contact with pesticides.

4. Sick silkworms should be isolated in time.

discuss

Silkworm babies are growing and changing day by day. In what aspects can we observe and record them?

Please design an observation record form based on what you want to observe.

silkworm sleep

When silkworms raise their heads and cannot move without eating, they are called sleeping.

When silkworms molt, the cuticle on the head will fall off first, and then the body will squirm, and the old skin on other parts of the body will shed back. This is the process of silkworm molting.

After the silkworm molts for the first time, it will molt three more times, every six or seven days. During the growth process of the silkworm, the silkworm sleeps four times before forming a cocoon, including one before turning into a pupa. five times.

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For more information about the PPT courseware "We Come to Raise Silkworms, Silkworm Babies Grow Up", please click the Let's Raise Silkworms ppt Silkworm Babies Grow Up ppt tag.

File Info

Update Time: 2024-11-20

This template belongs to science courseware Hunan Education Edition Third Grade Science Volume 2 industry PPT template

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"Silkworms are growing up" Let's raise silkworms PPT courseware