滑轮——拉东西的好帮手 · Pulleys
滑轮——拉东西的好帮手
Pulleys
👁 143 次浏览 · views
探索科学奥秘——滑轮是一种带凹槽的轮子，穿上绳子后能帮助我们改变拉东西的方向！
Explore science — Pulleys!
📖 趣味知识 / Fun Fact
huá滑lún轮shì是yī一zhǒng种dài带āo凹cáo槽de的lún轮zi子，chuān穿shàng上shéng绳zi子hòu后néng能bāng帮zhù助wǒ我men们gǎi改biàn变lā拉dōng东xī西de的fāng方xiàng向。dìng定huá滑lún轮kě可yǐ以ràng让nǐ你xiàng向xià下lā拉shéng绳zi子bǎ把zhòng重wù物tí提shàng上qù去；dòng动huá滑lún轮zǔ组hé合qǐ起lái来kě可yǐ以shěng省lì力。jiàn建zhù筑gōng工dì地shàng上cháng常yòng用huá滑lún轮bǎ把jiàn建zhù筑cái材liào料yùn运dào到gāo高chù处！
A pulley is a grooved wheel with rope that changes pull direction. Pulley systems lift heavy loads with less effort on construction sites! Sharing this with family helps kids connect classroom learning to daily life. Curious minds notice these details everywhere once they know what to look for. This bilingual lesson makes science vocabulary easy and fun to practice.
🤔 Why?
为什么滑轮——拉东西的好帮手这么有趣？
Why is Pulleys interesting?
定滑轮可以让你向下拉绳子把重物提上去；动滑轮组合起来可以省力。
Pulley systems lift heavy loads with less effort on construction sites!.
👧 Compare With You
你的日常生活和“简单机械滑轮”有什么联系？ How does Pulley Simple Machine connect to your daily life?
- ✔ 每天呼吸和吃饭 Breathe and eat every day
- ✔ 在学校做实验 Do experiments at school
- ✔ 用眼睛观察世界 Observe the world with your eyes
- ✔ 帮助理解机器 Helps explain machines
- ✔ 滑轮是带凹槽的轮子，穿绳子后可以改变用力方向，多个滑轮组 A pulley is a grooved wheel with rope that changes pull direction
- ✔ 是简单机械滑轮的核心知识 Core idea of Pulley Simple Machine
📚 Vocabulary
💬 Learn Sentences
huá滑lún轮shì是yī一zhǒng种dài带āo凹cáo槽de的lún轮zi子，chuān穿shàng上shéng绳zi子hòu后néng能bāng帮zhù助wǒ我men们gǎi改biàn变lā拉dōng东xī西de的fāng方xiàng向。
A pulley is a grooved wheel with rope that changes pull direction.
dìng定huá滑lún轮kě可yǐ以ràng让nǐ你xiàng向xià下lā拉shéng绳zi子bǎ把zhòng重wù物tí提shàng上qù去；dòng动huá滑lún轮zǔ组hé合qǐ起lái来kě可yǐ以shěng省lì力。
Pulley systems lift heavy loads with less effort on construction sites!.
🎤 口语练习 / Speaking Practice
请跟着读： Repeat after me:
dìng定huá滑lún轮kě可yǐ以ràng让nǐ你xiàng向xià下lā拉shéng绳zi子bǎ把zhòng重wù物tí提shàng上qù去；dòng动huá滑lún轮zǔ组hé合qǐ起lái来kě可yǐ以shěng省lì力。
Pulley systems lift heavy loads with less effort on construction sites!.
🎯 Fun Challenge
Multiple Choice建筑工地上常用滑轮来做什么？
What are pulleys commonly used for on construction sites?
💡 想一想刚才读到的内容。 Think about what you just read.
答对了！滑轮能改变拉东西的方向，动滑轮组合起来还能省力，常用来搬运建筑材料。 Correct! Pulleys change the direction of a pull, and combined pulleys save effort, which is why they lift building materials.
💭 Think About It
关于简单机械滑轮，你还想探索什么？
What else would you like to explore about Pulley Simple Machine?
哇！ Wow!
jiàn建zhù筑gōng工dì地shàng上cháng常yòng用huá滑lún轮bǎ把jiàn建zhù筑cái材liào料yùn运dào到gāo高chù处。
This bilingual lesson makes science vocabulary easy and fun to practice.
📊 学习数据 / Stats
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🎬 短视频 / Short Video
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