Download - 3B lesson plan Seanimals ppt
Transcript
![Page 1: 3B lesson plan Seanimals ppt](https://reader035.vdocuments.pub/reader035/viewer/2022081800/548b265eb47959d86b8b4a0f/html5/thumbnails/1.jpg)
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陸地植物主要可分為根、莖和葉三部分。
根
莖
葉
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海洋植物的外形有什麼特點呢 ?
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請注意 !
1.海藻主要的部分是什麼 ?
2.為什麼海藻要生長在接近水面的地方 ?
3.海藻身上的氣囊有什麼有途 ?
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影片名稱 :
海底漫遊:賞海的季節-海藻生長季節 0:15-1:20http://www.youtube.com/watch?v=TOsoV6KD7Yo
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1.海藻主要的部分是什麼 ?
充氣後浮上水面,吸收陽光和空氣。
只有柔軟的枝葉。
吸收陽光和水分。2.為什麼海藻要生長在接近水面的地方 ?
3.海藻身上的氣囊有什麼有途 ?
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假如是生長在海底的海藻,說出在這環境下生存可能面對的問題。
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海洋動物的身體有什麼特點 ?
鰭 魚鱗
體形呈流線形
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分組討論
•牠們的外形特點怎樣的 ?•牠們的活動方式是怎樣的 ?•這些特點怎樣幫助牠們覓食 ?•這些特點有助保護牠們嗎 ?
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小丑魚
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八爪魚
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蟹
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鯊魚
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植物 ? 動物 ?
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水母
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海葵
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鯊魚
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搶答環節