Hunan Education Edition 4th Grade Science Volume 2 "Why Flowers Bloom and Fall" PPT courseware

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Hunan Education Edition 4th Grade Science Volume 2 "Why Flowers Bloom and Fall" PPT courseware

Kind tips

1. Dissection requirements: During dissection, each part must be torn off in order from outside to inside. Care must be taken during the dissection operation to avoid damaging the dissected part. The torn parts must be separated, classified and arranged in order. and fill out the form.

2. How to use tweezers: Use your thumb and index finger to control the tightness of the tweezers, and clamp the base of the torn part instead of the upper part. Be careful and don't get your hands caught in the tweezers.

3. Calyx - It is composed of many sepals and protects the internal structure of the flower before it opens.

Corolla - After the flower opens, its beautiful color attracts insects for pollination. Many petals form the corolla, and the calyx and corolla are collectively called the perianth.

Stamens - composed of anthers (which contain pollen) and filaments (which support the anthers).

Pistil - consists of stigma, style and ovary.

Knowledge expansion (classification of flowers)

Like peach blossoms and cabbage flowers, those with all four parts including calyx, corolla, stamens and pistils are called "complete flowers".

Like pumpkin flowers and mulberry flowers, those that are missing one, two or three parts are called "incomplete flowers".

Classroom meets standards

1. My gains:

(1) The structure of a peach blossom includes: ( ), ( ), ( ) and ( ) four parts. A flower that has four parts like a peach blossom is called ( ); a flower that lacks one, two or three parts is called ( ).

(2) Common complete flowers include: ( ), ( ), ( ), etc. Common incomplete flowers include ( ), ( ), ( ), etc.

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For more information about the PPT courseware "Why Flowers Bloom and Fall", please click on the "Why Flowers Bloom and Fall" ppt tag.

"Why Flowers Bloom and Fall" PPT free download:

Hunan Education Edition Fourth Grade Science Volume 2, Why Flowers Bloom and Fall PPT Free Download Part One Chapter Review What are the parts of the structure of a flower? Sepals, petals, receptacle, stamens. What aspects of a plant's life did we observe? Germination, growth, flowering and fruiting...

"Why Flowers Bloom and Fall" PPT download:

Hunan Education Edition Fourth Grade Science Volume 2, Why Flowers Bloom and Fall PPT Download Part 1 Chapter Description: Little Knowledge The Origin of Flowers Flowers are transformed from leaves. From the appearance, the flower is a shortened branch. This abnormality Branches are suitable for reproduction. The various parts of the flower such as sepals,...

"Why Flowers Bloom and Fall" PPT courseware download:

Download the PPT courseware of Hunan Education Edition, fourth grade science volume "Why Flowers Bloom and Fall" PPT courseware download Activity 1: Observe which parts a flower is made up of and the number of each part. Activity 2: Draw a structural diagram of a flower. Please explain this The design concept of the work puts the name of each part...

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Update Time: 2024-11-09

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