"The Life Cycle of Other Animals" Animal Life Cycle PPT Download

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"The Life Cycle of Other Animals" Animal Life Cycle PPT Download

Part One: Importing New Knowledge

What is the life cycle of silkworms?

Birth - growth and development - reproduction - death

Life cycles of other animals PPT, part 2: new knowledge explanation

1. Observe and understand the cycles of other animals

Require:

1. Carefully observe page 33 of the book

2. Discuss the life cycles of various animals at the same table

3. Choose an animal and introduce its life cycle

Make a short summary:

What processes do all animals go through:

Butterfly's life

A butterfly goes through four stages in its life: egg, larva, pupa, and adult. The life of a butterfly starts from laying eggs, passes through the larvae and pupa stages, and ends with the death of the adult butterfly. The longest life span is one year, and the short one is only one month. It only takes a week from emergence to death. Therefore, from the life of butterflies, it seems that they cherish time very much and are very busy. On the one hand, they obtain food and nutrients, and on the other hand, they find the opposite sex to mate, lay eggs, reproduce, and continue the race.

Life cycles of other animals PPT, part 3: knowledge expansion

The life of a dragonfly can be divided into three stages: egg, larva, and adult. The female dragonfly lays her eggs in the water, the eggs hatch in the water, and the larvae also grow in the water. The larvae of the dragonfly is called a "waterfly". It has no wings and can only use its lower lip to catch some mayflies or larvae (mosquito larvae) in the water. When the waterhopper grows into an adult, it will crawl out of the water, shed its skin, and become a real dragonfly. The eggs of dragonflies are laid in the water. After hatching, they turn into a weird little insect, named "Waterfly". This shape takes several months or even years and 7 to 15 molts before it can become a dragonfly. dragonfly!

1. Which animals undergo metamorphosis throughout their lives?

Dragonflies, butterflies, toads, etc.

2. Which ones have not undergone metamorphosis?

Chicken, goat, panda, fish, etc.

3. Which small animals hatch from eggs like silkworms and birds?

Chicken, dragonfly, butterfly, fish, toad, etc.

4. Which small animals, like dogs, are directly born from their mothers?

Goats, pandas, etc.

Life cycles of other animals PPT, Part 4: Consolidation exercises

Do it, talk about it

1. Multiple choice questions

1. Various animals have their own life cycles, but the length of the cycle ( )

A. Identical B. Completely different C. Basically different

2. Which of the following insects does not undergo metamorphosis ( )

A. Silkworm B. Fly C. Locust

3. "Cicada slough" is a traditional Chinese medicine, which is shed by cicadas during their growth and development ( )

A. Exoskeleton B. Shell C. Outer skin

2. Judgment questions

1. Various animals have their own life cycle, including birth, growth and development, reproduction and death. ( )

2. All animals have the same life cycle. ( )

3. The life cycle of silkworms is approximately 56 days. ( )

4. Locusts are insects that undergo complete metamorphosis. ( )

Life cycles of other animals PPT, Part 5: Class summary

What did you learn in this lesson?

1. Various animals have their own life cycle, including birth, growth and development, reproduction and death.

2. The stages that different animals go through in their life cycles are not necessarily the same, nor are the lengths of the cycles.

3. Some animals undergo metamorphosis throughout their lives, while others remain unchanged in form but change in size.

4. Some animals hatch from eggs (oviparous), and some are born directly from their mothers (viviparous).

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"Our Life Cycle" Animal life cycle PPT download:

"Our Life Cycle" Animal Life Cycle PPT Download Part One Content: Introduction of New Knowledge Through the study of the previous lessons, we already know that all animals will go through a life cycle of birth, growth, development, reproduction, and death, so the human life cycle. .

"Our Life Cycle" Animal Life Cycle PPT:

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"The Life Cycle of Other Animals" Animal Life Cycle PPT:

"Life Cycle of Other Animals" Animal Life Cycle PPT Part One: Observe and Understand the Life Cycle of Other Animals The life cycle of silkworms goes through four stages: birth, growth and development, reproduction, and death. The lives of other animals also go through such a process. ? ..

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Update Time: 2024-06-23

This template belongs to science courseware Third Grade Science Volume 2, Textbook Edition industry PPT template

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