杠杆省力 · Levers Make Work Easier
杠杆省力
Levers Make Work Easier
👁 170 次浏览 · views
探索科学奥秘——一根硬棒绕着支点转动，就构成了杠杆！
Explore science — Levers Make Work Easier!
📖 趣味知识 / Fun Fact
yī一gēn根yìng硬bàng棒rào绕zhe着zhī支diǎn点zhuǎn转dòng动，jiù就gòu构chéng成le了gāng杠gān杆。rú如guǒ果yòng用lì力diǎn点lí离zhī支diǎn点yuǎn远，zǔ阻lì力diǎn点lí离zhī支diǎn点jìn近，jiù就néng能yòng用xiǎo小lì力qì气tái抬qǐ起zhòng重wù物——zhè这jiù就shì是shěng省lì力gāng杠gān杆。jiǎn剪dāo刀、kāi开píng瓶qì器、qiāo跷qiāo跷bǎn板dōu都shì是gāng杠gān杆de的lì例zi子！
A lever turns on a fulcrum. A small push on the long side can lift a heavy load on the other side. Scissors, seesaws, and openers are levers! Science is all around us — ask questions whenever you notice something new. Sharing this with family helps kids connect classroom learning to daily life.
🤔 Why?
为什么杠杆省力这么有趣？
Why is Levers Make Work Easier interesting?
如果用力点离支点远，阻力点离支点近，就能用小力气抬起重物——这就是省力杠杆。
A small push on the long side can lift a heavy load on the other side.
👧 Compare With You
你的日常生活和“杠杆省力”有什么联系？ How does Levers Make Work Easier 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
- ✔ 帮助理解物理 Helps explain physics
- ✔ 杠杆是一根绕支点转动的硬棒，长臂一端用力小，却能抬起另一 A lever turns on a fulcrum
- ✔ 是杠杆省力的核心知识 Core idea of Levers Make Work Easier
📚 Vocabulary
💬 Learn Sentences
yī一gēn根yìng硬bàng棒rào绕zhe着zhī支diǎn点zhuǎn转dòng动，jiù就gòu构chéng成le了gāng杠gān杆。
A lever turns on a fulcrum.
rú如guǒ果yòng用lì力diǎn点lí离zhī支diǎn点yuǎn远，zǔ阻lì力diǎn点lí离zhī支diǎn点jìn近，jiù就néng能yòng用xiǎo小lì力qì气tái抬qǐ起zhòng重wù物——zhè这jiù就shì是shěng省lì力gāng杠gān杆。
A small push on the long side can lift a heavy load on the other side.
🎤 口语练习 / Speaking Practice
请跟着读： Repeat after me:
rú如guǒ果yòng用lì力diǎn点lí离zhī支diǎn点yuǎn远，zǔ阻lì力diǎn点lí离zhī支diǎn点jìn近，jiù就néng能yòng用xiǎo小lì力qì气tái抬qǐ起zhòng重wù物——zhè这jiù就shì是shěng省lì力gāng杠gān杆。
A small push on the long side can lift a heavy load on the other side.
🎯 Fun Challenge
Multiple Choice下面哪一个是杠杆的例子？
Which of these is an example of a lever?
💡 想一想刚才读到的内容。 Think about what you just read.
答对了！剪刀是杠杆的一种，能用较小的力气剪开东西。 Correct! Scissors are a type of lever that let you cut things with less force.
💭 Think About It
你能举一个生活中杠杆省力的例子吗？
Can you give a real-life example of Levers Make Work Easier?
哇！ Wow!
jiǎn剪dāo刀、kāi开píng瓶qì器、qiāo跷qiāo跷bǎn板dōu都shì是gāng杠gān杆de的lì例zi子。
Sharing this with family helps kids connect classroom learning to daily life.
📊 学习数据 / Stats
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