为孩子的互动百科，满足小小好奇心An interactive encyclopedia for kids — feeding little curiosities
好奇一下，世界就打开了 Ask why — and the world opens
给 4–8 岁爱问「为什么」的孩子：拖一拖、点一点、翻一翻，把科学变成探险故事。 For curious kids ages 4–8: drag, tap, and flip — science that feels like an adventure.
家长放心：内容短、互动强、双语切换，适合亲子一起读。 For parents: short stories, rich interaction, bilingual — built for reading together.
挑一个故事出发Pick a story to begin
共 54 个探险 + 6 个立体故事 · 按分类浏览或点筛选54 adventures + 6 pop-up stories · browse by category or filter
超级英雄Heroes & characters 14
艾莎的冰雪课Elsa’s Ice & Snow Class
冰雪、水的三态、哈气变白和保暖——冰雪魔法灵感的科学课。Ice, snow, water states, white breath, and staying warm — science inspired by ice magic.
开始探险 →Start exploring → 已上线Live奥特曼的光之课Ultraman’s Light Class
阳光、彩虹、光的颜色、运动能量和勇气善意——光之英雄灵感的科学课。Sunlight, rainbows, light colors, body power, and kindness — science inspired by light heroes.
开始探险 →Start exploring → 已上线Live钢铁侠的盔甲科学Iron Hero Armor Science
金属、磁铁、电与飞行——钢铁盔甲灵感的工程课（非官方）。Metal, magnets, electricity & flight — engineering inspired by iron armor (not official).
开始探险 →Start exploring → 已上线Live绿巨人的力量科学Green Hero Strength Science
肌肉、情绪与冷静呼吸——绿色力量灵感的身心课（非官方）。Muscles, feelings & calm breathing — body & feelings inspired by green power (not official).
开始探险 →Start exploring → 已上线Live蜘蛛侠的蛛丝科学Silk Hero Spider Science
真蜘蛛、蛛丝强度与平衡——蛛丝英雄灵感的自然课（非官方）。Real spiders, silk strength & balance — nature inspired by silk heroes (not official).
开始探险 →Start exploring → 已上线Live赛罗和迪迦的光之家族课Zero & Tiga Light Family Class
光色、团队与家族能量——赛罗迪迦灵感（非圆谷官方）。Light colors, teamwork & family power — inspired by Zero & Tiga (not official Tsuburaya).
开始探险 →Start exploring → 新上线New美国队长的盾牌科学Shield Hero Defense Science
给小朋友的盾牌与保护科普：圆形、平衡、材料和勇敢。灵感来自美国队长故事（非漫威官方）。Kids science on shields, circles, balance and bravery — inspired by shield-hero …
开始探险 →Start exploring → 新上线New蝙蝠侠的夜行科学Night Hero Bat Science
给小朋友的夜晚与蝙蝠科普：黑暗、回声、工具和机智。灵感来自蝙蝠侠故事（非DC官方）。Kids science on night, bats, echoes and clever tools — inspired by night-hero st…
开始探险 →Start exploring → 新上线New神奇女侠的勇敢科学Wonder Hero Courage Science
给小朋友的勇敢与力量科普：肌肉、真相、公平和善良。灵感来自神奇女侠（非DC官方）。Kids science on courage, muscles, truth and kindness — inspired by wonder-hero s…
开始探险 →Start exploring → 新上线New皮卡丘的电光科学Pika Spark Electricity Science
给小朋友的电与静电科普：摩擦起电、安全用电、闪电。灵感来自皮卡丘（非宝可梦官方）。Kids science on electricity, static, and lightning safety — inspired by Pika sto…
开始探险 →Start exploring → 新上线New哆啦A梦的口袋科学Pocket Gadget Invention Science
给小朋友的发明与工具科普：口袋、工具、时间想象与解决问题。灵感来自哆啦A梦（非官方）。Kids science on inventing, tools and problem-solving — inspired by pocket-gadget…
开始探险 →Start exploring → 新上线New小马宝莉的友谊科学Pony Friendship Science
给小朋友的友谊与情绪科普：分享、道歉、合作与颜色。灵感来自小马宝莉（非孩之宝官方）。Kids science on friendship, feelings, sharing and teamwork — inspired by pony st…
开始探险 →Start exploring → 新上线New超级飞侠的飞行科学Super Wings Flight Science
给小朋友的飞行科普：升力、翅膀、地图与帮助。灵感来自超级飞侠（非官方）。Kids science on lift, wings, maps and helping — inspired by Super Wings (not off…
开始探险 →Start exploring → 新上线New汪汪队的救援科学Pup Patrol Rescue Science
给小朋友的救援与团队科普：求助、工具、安全和合作。灵感来自汪汪队（非官方）。Kids science on rescue, teamwork, tools and safety — inspired by pup patrol stor…
开始探险 →Start exploring →双语立体故事Bilingual pop-up stories 6
小红帽Little Red Cap
幼童软化双语立体故事：走大路、送点心、轻轻敲门——可点可拖的互动童话。Soft bilingual pop-up story: stay on the path, share snacks, knock gently — tap & drag fairy tale.
开始读故事 →Read the story → 新上线New丑小鸭The Ugly Duckling
幼童软化双语立体故事：不一样也很好——池塘分层与成长翻面卡。Soft bilingual pop-up story: being different is okay — layered pond & growth flip cards.
开始读故事 →Read the story → 新上线New阿拉丁神灯Aladdin’s Lamp
幼童软化双语立体故事：擦一擦灯、许一个温柔愿望——拖灯互动小冒险。Soft bilingual pop-up story: rub the lamp, make a kind wish — drag-the-lamp adventure.
开始读故事 →Read the story → 新上线New不来梅乐队The Bremen Town Musicians
幼童软化双语立体故事：四位动物朋友去城里唱歌——拖上台、一起唱。Soft bilingual pop-up story: four animal friends go to town to sing — drag onstage & sing together.
开始读故事 →Read the story → 新上线New豌豆公主The Princess and the Pea
幼童软化双语立体故事：藏一颗小豌豆、铺好多床垫——点一点翻一翻。Soft bilingual pop-up story: hide a tiny pea under mattresses — tap & flip.
开始读故事 →Read the story → 新上线New阿里巴巴Ali Baba
幼童软化双语立体故事：芝麻开门、分享金币——温柔无打斗的山洞冒险。Soft bilingual pop-up story: Open Sesame, share coins — gentle cave adventure, no fighting.
开始读故事 →Read the story →童话故事Fairy tales 7
小红帽的森林课Red Hood Forest Class
森林动物、颜色与温柔的路径安全——经典童话科普。Forest animals, colors & gentle path safety — classic fairy-tale science.
开始探险 →Start exploring → 新上线New三只小猪的盖房课Three Pigs Building Class
给小朋友的建筑材料科普：稻草、木头、砖头与坚固。经典童话科学向。Kids science on building materials — straw, wood, brick and strength. Classic ta…
开始探险 →Start exploring → 新上线New灰姑娘的舞会课Cinderella Ball Class
给小朋友的时间、礼貌与材料科普：时钟、舞蹈、水晶与善良。经典童话科学向。Kids science on time, manners, materials and kindness. Classic tale science.
开始探险 →Start exploring → 新上线New白雪公主的森林课Snow White Forest Class
给小朋友的森林与安全科普：动物、颜色、食物安全与友谊。经典童话科学向。Kids science on forests, animals, food safety and friendship. Classic tale scien…
开始探险 →Start exploring → 新上线New杰克与豆茎的生长课Beanstalk Growing Class
给小朋友的植物生长科普：种子、水、阳光与耐心。经典童话科学向。Kids science on seeds, water, sun and patience. Classic tale science.
开始探险 →Start exploring → 新上线New龟兔赛跑的节奏课Tortoise & Hare Pace Class
给小朋友的节奏与坚持科普：快慢、休息、不放弃。经典童话科学向。Kids science on pace, rest, and not giving up. Classic tale science.
开始探险 →Start exploring → 新上线New丑小鸭的成长课Ugly Duckling Growing Class
给小朋友的成长与自我科普：变化、差异、自信与善良。经典童话科学向。Kids science on growth, difference, confidence and kindness. Classic tale scienc…
开始探险 →Start exploring →生活科学Everyday science 12
蛀牙小侦探Cavity Detectives
蛀牙、刷牙与牙齿友好零食——正向牙齿保卫战。Cavities, brushing & tooth-friendly snacks — positive tooth defense.
开始探险 →Start exploring → 已上线Live巧克力从哪来Where Chocolate Comes From
可可树、豆子到棒、融化与分享——食物科学（少吃糖）。Cacao trees, bean to bar, melting & sharing — food science (go easy on sugar).
开始探险 →Start exploring → 已上线Live我的身体My Body
认识心脏肺胃大脑，跟着一口饭去旅行，练练好习惯。Meet heart, lungs, tummy and brain, follow a bite of food, and practice good habits.
开始探险 →Start exploring → 已上线Live为什么能飞和开Why Things Move
飞机抬升、汽车滚动、小船浮起来的直觉实验。Lift for planes, roll for cars, and float for boats — try the experiments.
开始探险 →Start exploring → 新上线New为什么要洗手Why We Wash Hands
给小朋友的洗手科普：细菌、肥皂泡沫与20秒。Kids science on germs, soap foam, and 20-second washing.
开始探险 →Start exploring → 新上线New为什么要睡觉Why We Sleep
给小朋友的睡眠科普：充电、做梦与作息。Kids science on sleep charging, dreams, and routines.
开始探险 →Start exploring → 新上线New影子从哪来Where Shadows Come From
给小朋友的光与影子科普：遮挡、长短与形状。Kids science on light, blockers, and shadow shapes.
开始探险 →Start exploring → 新上线New彩虹怎么来How Rainbows Form
给小朋友的彩虹科普：水滴、阳光与颜色顺序。Kids science on raindrops, sunlight, and color order.
开始探险 →Start exploring → 新上线New声音是什么What Is Sound
给小朋友的声音科普：振动、耳朵与音量。Kids science on vibration, ears, and volume.
开始探险 →Start exploring → 新上线New磁铁好玩Magnets Are Fun
给小朋友的磁力科普：吸铁、磁极与指南针。Kids science on attracting iron, poles, and compasses.
开始探险 →Start exploring → 新上线New冰块为什么会化Why Ice Melts
给小朋友的物态科普：冰、水、汽与温度。Kids science on ice, water, vapor, and temperature.
开始探险 →Start exploring → 新上线New气球为什么会飞Why Balloons Float
给小朋友的浮力科普：空气、氦气与热气球。Kids science on air, helium, and hot-air balloons.
开始探险 →Start exploring →自然动物Nature & animals 16
恐龙探险队Dinosaur Adventure
远古巨兽从哪来、怎么生活、为什么消失。Where giant dinos came from, how they lived, and why they vanished.
开始探险 →Start exploring → 已上线Live你好，月球！Hello, Moon!
转一转月球，看月相、陨石坑和登月脚印。Spin the Moon and see phases, craters, and footprints on the Moon.
开始探险 →Start exploring → 已上线Live天气为什么变Why Weather Changes
云变雨、风在转，亲手滑出一道彩虹。Clouds turn to rain, wind spins, and you can slide out a rainbow.
开始探险 →Start exploring → 已上线Live海洋探险队Ocean Explorers
坐潜水艇下潜，看海洋分层、珊瑚礁，还有保护海洋的小任务。Dive in a sub, see ocean layers and coral reefs, and help protect the sea.
开始探险 →Start exploring → 已上线Live昆虫超能力Insect Superpowers
蚂蚁力气、蜜蜂跳舞、蝴蝶翅膀的小魔法。Ant strength, bee dances, and the little magic of butterfly wings.
开始探险 →Start exploring → 已上线Live火山与地震Volcanoes & Earthquakes
切开地球看分层，按一下让火山喷起来。Slice Earth into layers and press to make a volcano erupt.
开始探险 →Start exploring → 已上线Live太空探险队Space Explorers
太阳系之旅、月亮为什么会变、宇航员的一天和天宫。Tour the solar system, learn why the Moon changes, and visit astronauts.
开始探险 →Start exploring → 已上线Live植物怎么喝水How Plants Drink
水从根爬到叶，阳光一照就会变绿变亮。Water climbs from root to leaf, and sunshine makes plants green and bright.
开始探险 →Start exploring → 已上线Live白天和黑夜Day & Night
转转地球，一半白天一半黑夜就懂了。Spin Earth and see why half is day and half is night.
开始探险 →Start exploring → 已上线Live动物怎么睡觉How Animals Sleep
蝙蝠倒挂、海豚半边脑睡觉，翻开卡片看看。Bats hang upside down, dolphins sleep with half a brain — flip the cards.
开始探险 →Start exploring → 新上线New鲨鱼超能力Shark Superpowers
给小朋友的鲨鱼科普：牙齿、感官与海洋角色（温和非恐怖）。Kids shark science: teeth, senses, ocean role — gentle, not scary.
开始探险 →Start exploring → 新上线New蜜蜂怎么做蜜How Bees Make Honey
给小朋友的蜜蜂科普：采蜜、蜂巢与传粉（温和安全）。Kids bee science: nectar, hives, pollination — gentle and safe.
开始探险 →Start exploring → 新上线New蝴蝶变身记Butterfly Metamorphosis
给小朋友的变态发育科普：卵、毛虫、蛹、蝴蝶。Kids metamorphosis science: egg, caterpillar, pupa, butterfly.
开始探险 →Start exploring → 新上线New企鹅为什么不怕冷Why Penguins Aren’t Cold
给小朋友的企鹅科普：羽毛、脂肪与群体取暖。Kids penguin science: feathers, fat, and huddling warmth.
开始探险 →Start exploring → 新上线New雨林里有谁Who Lives in the Rainforest
给小朋友的雨林科普：层次、动物与保护。Kids rainforest science: layers, animals, and protection.
开始探险 →Start exploring → 新上线New星星为什么闪Why Stars Twinkle
给小朋友的星星科普：恒星、大气闪烁与星座。Kids star science: suns, atmospheric twinkle, and constellations.
开始探险 →Start exploring →节日季节Festivals & seasons 5
南瓜灯之夜Pumpkin Night
万圣节从哪来、南瓜灯怎么刻、怎么玩才安全。Where Halloween came from, how to carve a pumpkin, and how to stay safe.
开始探险 →Start exploring → 新上线New春节的光与声Spring Festival Light & Sound
给小朋友的春节科普：红灯笼、鼓声与安全（不鼓励危险鞭炮）。Kids Spring Festival science: lanterns, drums, safety — no encouraging dangerous…
开始探险 →Start exploring → 新上线New中秋月亮课Mid-Autumn Moon Class
给小朋友的中秋科普：圆月、月相与团圆。Kids Mid-Autumn science: full moon, phases, and reunion.
开始探险 →Start exploring → 新上线New下雪了It’s Snowing
给小朋友的雪花科普：结晶、保温与安全玩雪。Kids snow science: crystals, insulation, and safe snow play.
开始探险 →Start exploring → 新上线New春天种子发芽Spring Seeds Sprout
给小朋友的春季科普：种子、温度、水与观察。Kids spring science: seeds, warmth, water, and observing.
开始探险 →Start exploring →为什么做 WhyForKidsWhy we built WhyForKids
因为家里有两个快 5 岁的孩子——姐姐 M 姐和弟弟 M 弟。他们总爱问「为什么」，这个网站先是给他们做的互动百科，也想分享给全世界其他小朋友。 Because we have two almost-five-year-olds at home — big sister M and little brother M. They keep asking “why?”, so we built this interactive encyclopedia for them first, and we’re happy to share it with kids everywhere.
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动手学，不只是看Hands-on, not just watching
每个故事都有可拖、可点、可翻的互动，孩子自己发现答案。Every story has drag, tap, and flip moments so kids discover answers themselves.
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中英双语，一次切换Bilingual in one tap
全站中英切换，语言记忆会跟着你进每一个专题。Switch Chinese/English site-wide; your choice follows you into every topic.
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先给家里，再给更多小朋友For our kids — and yours
短故事、大字号、暖色纸感界面，适合亲子一起坐下来问为什么。Short stories, big type, warm paper UI — made for sitting down and asking why together.