折纸挑战 · Origami Brain Teaser
折纸挑战
Origami Brain Teaser
👁 176 次浏览 · views
动脑筋想一想：一张正方形的纸，如果连续对折三次，期间不用剪刀剪开，那么纸上最多能留下多少条对称的折痕！
Brain teaser: If you fold a square piece of paper in half three times continuously without cutting it, how many symmetrical crease lines can you make at most? Hint: Each time you fold it, the creases multiply!
📖 趣味知识 / Fun Fact
dòng动nǎo脑jīn筋xiǎng想yī一xiǎng想：yī一zhāng张zhèng正fāng方xíng形de的zhǐ纸，rú如guǒ果lián连xù续duì对zhé折sān三cì次，qī期jiān间bù不yòng用jiǎn剪dāo刀jiǎn剪kāi开，nà那me么zhǐ纸shàng上zuì最duō多néng能liú留xià下duō多shǎo少tiáo条duì对chēng称de的zhé折hén痕？tí提shì示：měi每cì次duì对zhé折shí时，zhé折hén痕de的shù数liàng量huì会chéng成bèi倍dié叠jiā加。xiǎo小míng明duì对zhé折le了sān三cì次hòu后shuō说yī一gòng共yǒu有qī七tiáo条zhé折hén痕，nǐ你jué觉dé得tā他shuō说dé得duì对ma吗？zì自jǐ己dòng动shǒu手zhé折yī一zhé折bìng并shù数yī一shù数ba吧！
Brain teaser: If you fold a square piece of paper in half three times continuously without cutting it, how many symmetrical crease lines can you make at most? Hint: Each time you fold it, the creases multiply. Xiao Ming did it and said there are 7 creases. Is he right? Try it yourself and count!
🤔 Why?
为什么折纸挑战这么有趣？
Why is Origami Brain Teaser interesting?
提示：每次对折时，折痕的数量会成倍叠加。
Hint: Each time you fold it, the creases multiply.
👧 Compare With You
你的兴趣爱好和今天学的艺术形式，有什么相似？ How does your hobby connect to today's art form?
- ✔ 画画或唱歌 Draw or sing
- ✔ 参加学校艺术课 Join school art classes
- ✔ 欣赏喜欢的音乐 Enjoy your favorite music
- ✔ 动脑筋：一张正方形纸，只折三次，不剪开，最多能有多少条对 动脑筋：一张正方形纸，只折三次，不剪开，最多能有多少条对称折痕？提示：每次对折折痕会叠加
- ✔ 小明折了三次对折，他说有七条折痕，对吗？想想每次对折增加 小明折了三次对折，他说有七条折痕，对吗？想想每次对折增加多少条新折痕，再数一数
- ✔ 和“动脑筋”有关 Related to use your brain
- ✔ 和“正方形”有关 Related to square
📚 Vocabulary
💬 Learn Sentences
dòng动nǎo脑jīn筋xiǎng想yī一xiǎng想：yī一zhāng张zhèng正fāng方xíng形de的zhǐ纸，rú如guǒ果lián连xù续duì对zhé折sān三cì次，qī期jiān间bù不yòng用jiǎn剪dāo刀jiǎn剪kāi开，nà那me么zhǐ纸shàng上zuì最duō多néng能liú留xià下duō多shǎo少tiáo条duì对chēng称de的zhé折hén痕。
Brain teaser: If you fold a square piece of paper in half three times continuously without cutting it, how many symmetrical crease lines can you make at most?.
tí提shì示：měi每cì次duì对zhé折shí时，zhé折hén痕de的shù数liàng量huì会chéng成bèi倍dié叠jiā加。
Hint: Each time you fold it, the creases multiply.
🎤 口语练习 / Speaking Practice
请跟着读： Repeat after me:
tí提shì示：měi每cì次duì对zhé折shí时，zhé折hén痕de的shù数liàng量huì会chéng成bèi倍dié叠jiā加。
Hint: Each time you fold it, the creases multiply.
🎯 Fun Challenge
Multiple Choice正方形纸连续对折3次（每次均沿对称轴对折），展开后共有几条折痕？
If you fold a square paper in half three times in a row (each time along a line of symmetry), how many creases will there be when unfolded?
💡 想一想刚才读到的内容。 Think about what you just read.
答对了！三次对折会留下七条折痕。 Correct! Folding three times leaves seven creases.
💭 Think About It
你还有别的答案吗？和家人讨论一下！
Do you have another answer? Discuss with family!
哇！ Wow!
zì自jǐ己dòng动shǒu手zhé折yī一zhé折bìng并shù数yī一shù数ba吧。
Try it yourself and count!.
📊 学习数据 / Stats
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