给 4–8 岁 · 互动百科Ages 4–8 · interactive encyclopedia

好奇一下，世界就打开了 Ask why — and the world opens

54 个互动探险 · 241 个双语立体故事。拖一拖、点一点、翻一翻。 54 interactive adventures · 241 bilingual pop-ups. Drag, tap, flip.

先给家里的 M 姐、M 弟做的，也想分享给更多小朋友。 Built first for our kids at home — happy to share with yours too.

去互动探险Go adventures 去立体故事 →Pop-up stories →
互动探险 Adventures 54 个可点可拖的科学小课54 tap-and-drag science lessons 双语立体故事 Pop-up stories 241 个可翻可听的故事书241 flip-and-listen storybooks

互动探险Interactive adventures

54 个专题 · 点下面芯片跳到那一栏54 topics · tap a chip to jump to a section

角色课Characters 14

用熟悉的角色一起玩科学小课（非官方灵感）。Science play with familiar characters (unofficial inspiration).

点这里，把这一整栏讲给你听Tap to hear this whole section

已上线Live

冰雪课Ice & Snow Class

冰雪、水的三态、哈气变白和保暖——冰雪魔法灵感（非迪士尼官方）。Ice, snow, water states, white breath, and staying warm — ice-magic inspired (not Disney official).

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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（非官方灵感）。Sunlight, rainbows, light colors, body power, and kindness — science inspired by light heroes (unofficial inspiration).

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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).

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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).

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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).

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光之家族课Light Family Class

光色、团队与家族能量——光之英雄灵感（非圆谷官方）。Light colors, teamwork & family power — light-hero inspired (not Tsuburaya official).

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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 stories (not Marvel official).

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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 stories (not DC official).

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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 stories (not DC official).

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电光科学Electric Light Science

给小朋友的电与静电科普：摩擦起电、安全用电、闪电（非宝可梦官方）。Kids science on electricity, static, and lightning safety (not Pokémon official).

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口袋科学Pocket Science

给小朋友的发明与工具科普：口袋、工具与解决问题（非藤子·F·不二雄 / 小学馆官方）。Kids science on inventing, tools and problem-solving (not Fujiko F. Fujio / Shogakukan official).

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友谊科学Friendship Science

给小朋友的友谊与情绪科普：分享、道歉、合作与颜色（非孩之宝官方）。Kids science on friendship, feelings, sharing and teamwork (not Hasbro official).

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飞行科学Flight Science

给小朋友的飞行科普：升力、翅膀、地图与帮助（非奥飞 / Alpha Group 官方）。Kids science on lift, wings, maps and helping (not Alpha Group / Aofei official).

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救援科学Rescue Science

给小朋友的救援与团队科普：求助、工具、安全和合作（非官方）。Kids science on rescue, teamwork, tools and safety (not official).

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童话课Fairy lessons 7

互动科普课，不是立体书——熟悉童话里藏着科学。Interactive science lessons — not pop-up books — science inside familiar tales.

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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.

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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 tale science.

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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.

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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 science.

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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.

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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.

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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 science.

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生活课Everyday 12

洗手、睡觉、影子、彩虹……身边的为什么。Hands, sleep, shadows, rainbows — whys right beside you.

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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.

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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).

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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.

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交通工具乐园Vehicle Playground

自行车、汽车、火车、轮船、飞机和火箭：怎样动、怎样更安全。Bikes, cars, trains, boats, planes and rockets — how they move and stay safe.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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自然课Nature 10

恐龙、海洋、蜜蜂、企鹅……去看看大自然。Dinosaurs, ocean, bees, penguins — explore living nature.

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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.

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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.

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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.

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植物小花园Plant Garden

根茎叶花果，看看种子怎样长大，叶子怎样做午餐。Roots, stems, leaves, flowers and fruit — watch a seed grow and leaves cook lunch.

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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.

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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.

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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.

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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.

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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.

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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.

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宇宙地球Space & Earth 6

月亮、星星、火山、天气……仰望天空、摸摸地球。Moon, stars, volcanoes, weather — sky and Earth.

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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.

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天气为什么变Why Weather Changes

云变雨、风在转；点七色，听彩虹怎么来。Clouds turn to rain, wind spins; tap the seven colors and hear how rainbows form.

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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.

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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.

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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.

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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.

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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.

  • 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.

  • 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.

  • 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.