"More Small Animals" Looking for Animals and Plants on Campus PPT Courseware 2

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"More Small Animals" Looking for Animals and Plants on Campus PPT Courseware 2

What are the physical characteristics of ants?

Physical characteristics of ants:

The body is divided into three parts: head, thorax and abdomen. The head has a pair of antennae and the thorax has three pairs of legs.

Comparing eyesight

Observe these small animals carefully. Which animals look similar to ants? Connect them with the ants.

Physical characteristics of insects: The body is divided into three parts: head, thorax and abdomen.

There are three pairs of legs on the chest and a pair of tentacles on the head.

Put small animals and ants that look similar to ants together and observe and compare them carefully. What features do they have in common?

It has 1 pair of compound eyes, 1 pair of antennae, 1 mouthparts, 2 pairs of wings (a few are wingless), 3 pairs of legs, and the body is divided into three parts: head, thorax and abdomen.

Animals that meet this characteristic are called insects.

Shit Shell Lang

It is a human cleaning guardian and a medicinal insect.

Dung beetles not only have an impact on the ecological environment, but also profoundly affect human ideological and cultural consciousness. For example, in the eyes of the ancient Egyptians, it was not only a protective and auspicious object to ward off evil, but also a symbol of immortality and justice.

Mammals: The body surface is hairy and is generally divided into five parts: head, neck, trunk, limbs and tail; lactation; viviparous birth.

Birds: They have feathers on their body, feed with their beaks, and reproduce by laying eggs.

Reptiles: There are scales or armor on the surface of the body; they crawl on their abdomen and reproduce their offspring with eggs.

Amphibians: The surface of the body is exposed, they reproduce with eggs, and undergo metamorphosis. They live in the water when they are young, and mostly live on land when they grow up.

Fish: There are scales on the surface of the body, they breathe with gills, move with fins, reproduce with eggs, and live in the water all their lives.

What animals have in common: they all move, they all need food, air and water, they all reproduce, they all have the ability to grow, and they all respond to changes in external conditions.

Fill in the blanks

1. The characteristics of insects are: the body is divided into three parts ____, and the ____ part has six legs.

2. List three insects you know: ______________.

After class, collect more pictures of small animals, observe them carefully and classify them. Pay attention to the living habits of small animals and speculate on their impact on humans and the natural environment.

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"More Little Animals" explores the animals and plants on campus PPT courseware:

"More Little Animals" PPT courseware on looking for animals and plants on campus. Think about it. Do you still know those little animals? Introduce your favorite small animals. Comparison of eyesight 1. Carefully observe the small animals below, compare them with ants, and compare small animals with similar appearance to ants and ants...

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Update Time: 2024-11-22

This template belongs to science courseware E-education edition fourth grade science volume 1 industry PPT template

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