Explore inventions, engineering, computing and the tools people build to solve problems. Choose an article below; its reading controls let you move between the available levels.
4,107 public articles · Page 15 of 86
Some tools can hurt many people. They can break big buildings. They can also hurt the land. These tools are very bad. We work to keep them away. Do you want a safe world?
Early Reader · Change the reading level on the articleA browser helps you see the web. It gets files from far away. Then it shows them on your screen. You can use it on a phone. You can use it on a computer. It helps us learn new things. Do you use a browser?
Early Reader · Change the reading level on the articlePeople make websites for us to use. They use colors and pictures. They make sure the pages look good. This helps us find things online. It is a fun job. Do you like to look at websites?
Early Reader · Change the reading level on the articleA website is a place on the web. It has many pages. You can find news or games there. You use a device to see it. It helps us learn new things. Do you like to look at websites?
Early Reader · Change the reading level on the articleA wedge is a tool with a point. It can split wood apart. It can also lift heavy things. It helps us do hard work. A nail is a kind of wedge, too. Can you find a wedge in your house?
Early Reader · Change the reading level on the articleA scale tells us how heavy things are. It can use two small bowls. You put one thing in a bowl. You add weights to the other bowl. This helps us know the size. It is very helpful! Do you like to weigh things?
Early Reader · Change the reading level on the articleWelding joins metal parts together. It uses heat to melt the metal. The hot metal cools and stays stuck. This makes very strong things. It helps us build big ships. Can you think of things made of metal?
Early Reader · Change the reading level on the articleA well is a deep hole. It can go deep in the ground. It helps us find water. We use it to get water to drink. It is very useful for us. Do you know where water comes from?
Early Reader · Change the reading level on the articleA man named Wernher built rockets. He wanted to go to space. He worked in Germany first. Then he moved to America. He helped send people to the Moon. He loved the stars. Do you like looking at the sky?
Early Reader · Change the reading level on the articleA wheelbarrow helps us carry things. It has one wheel. A person pushes it with two handles. It makes heavy loads feel light. It is very useful for gardens. Do you like to help in the garden?
Early Reader · Change the reading level on the articleA wheelchair is a chair with wheels. It helps people move around. It is good if walking is hard. It helps people do many things. It gives people freedom. Do you see wheels on a chair?
Early Reader · Change the reading level on the articleA big path for boats was made. It joins two big seas. It was hard work to build. Many people worked to make it. It helps small boats move. Can you see the water?
Early Reader · Change the reading level on the articleWi-Fi helps us talk to the web. It uses invisible waves in the air. These waves carry data to your tablet. It works in homes and shops. This helps us play games and learn. Do you use Wi-Fi at home?
Early Reader · Change the reading level on the articleWikipedia is a big book online. Many people write it together. It has facts about everything. You can learn new things there. It helps everyone in the world. It is very fun to read. Do you like to learn?
Early Reader · Change the reading level on the articleWilliam Hearst owned many newspapers. He made them very big. He used large words to get readers. This helped many people read his news. He even had a large castle. Do you like to read news?
Early Reader · Change the reading level on the articleA windmill is a big machine. It uses the wind to work. The wind pushes its large sails. This helps grind grain into food. It can even move water. Windmills are very clever! Do you like the wind?
Early Reader · Change the reading level on the articleA window is a hole in a wall. It lets the light in. It helps you see the sun. You can open it for air. It keeps you safe from the rain. Do you like to look out your window?
Early Reader · Change the reading level on the articleBig fans catch the wind. They turn to make power. This power makes lights work. It is a clean way to get energy. It helps our world stay good. Do you like the wind?
Early Reader · Change the reading level on the articleA wing helps things fly. It moves through the air. It pushes the air down. This makes the wing go up. This helps planes stay up. It is very cool! Can you see a wing?
Early Reader · Change the reading level on the articleWire is a long piece of metal. It is round and bendy. People use it to make pretty jewelry. It also helps carry power to your home. It is very useful! Can you find a wire near you?
Early Reader · Change the reading level on the articlePeople make things from wood. They make chairs and tables. They can even make art. Wood has been used for a long time. It helps us build homes. Do you like wooden toys?
Early Reader · Change the reading level on the articleYou can use a computer to write. It helps you fix your words. You can make them look neat. This helps us make books and letters. It is very fun to use. Do you like to write stories?
Early Reader · Change the reading level on the articleThe web helps us share things. It lets us see many pages. You can find pictures and videos. It is a big way to learn. It helps us all stay close. Do you like to look at the web?
Early Reader · Change the reading level on the articleTwo brothers made the first plane. They worked in a shop. They fixed bikes to help them. Now we can fly in the sky. It is very fun! Do you like to fly?
Early Reader · Change the reading level on the articleThis is a special kind of iron. It is very easy to bend. It does not break like glass. People used it to make nails and tools. It is very strong and tough. Do you like metal?
Early Reader · Change the reading level on the articleYouTube is a place for videos. You can watch many things there. People share clips from all over. You can see music and news. It is fun to watch. Do you like to watch videos?
Early Reader · Change the reading level on the articleA zipper joins two sides of cloth. It has two rows of teeth. A small part slides up and down. This part pulls the teeth together. It helps you close your coat. It even helps you close your bag. Do you use a zipper today?
Early Reader · Change the reading level on the articleSome computers use 16 bits. These bits help the computer work. They help it hold more things. This helps you play games. We use computers every day. Do you like computers?
Early Reader · Change the reading level on the articleMany people use a site called 2channel. It is a place to talk online. People can write things without using their names. This helps them share many ideas. It is a very big place for talking. Do you like to talk with…
Early Reader · Change the reading level on the articleComputers use bits to work. A 32-bit computer is very fast. It can do big math. It helps the computer use more memory. This makes the computer work well for you. Do you like using computers?
Early Reader · Change the reading level on the articleA machine can make new things. It builds things layer by layer. It adds more and more material. This can make a toy or a tool. It is very cool to see! Do you want to see it work?
Early Reader · Change the reading level on the articleA big company makes many things. They make tape and sticky notes. They also make bandages for cuts. These things help us every day. It is a very big group. Do you use their things?
Early Reader · Change the reading level on the articlePeople talk on a big website. It is a place for pictures. Many people use it every day. You can find many topics there. It is a very busy place. Do you like to look at pictures online?
Early Reader · Change the reading level on the articleComputers use tiny parts to work. These parts hold lots of info. They can hold a giant number. This helps the computer do big jobs. It is very fast! Can you imagine such a big number?
Early Reader · Change the reading level on the article7-Eleven is a shop. It sells food and drinks. You can find them in many places. They sell cold drinks too. It is a fun place to shop. Do you like cold drinks?
Early Reader · Change the reading level on the articleA 7z file is a special box. It holds many files inside. It makes them small to save space. It can also use a secret code. This keeps your files safe. Do you like to save things? It helps us keep our work neat.
Early Reader · Change the reading level on the articleComputers use small parts to work. These parts help computers think. They can hold small amounts of data. This helps us use computers at home. It is very cool! Do you like computers?
Early Reader · Change the reading level on the articleComputers use special rules. These rules tell them how to work. They help sort things in order. This helps the computer stay fast. It is a smart way to think. Do you like computers?
Early Reader · Change the reading level on the articleComputers use special ways to work. They hide hard parts. This helps people use them. It makes big jobs easy. We can do a lot! Do you like computers?
Early Reader · Change the reading level on the articleA power plug helps your toys work. It takes power from the wall. It makes the power safe for you. It also helps charge your battery. It is very helpful. Do you see one at home?
Early Reader · Change the reading level on the articlePeople write new things to learn. They put these stories in books. Other smart people read them. This helps us all learn more. It is a big job. Do you like to read books?
Early Reader · Change the reading level on the articlePlanes send short notes through the air. These notes go to the ground. They tell us where the plane is. They also tell us if the plane is okay. This helps keep us safe. Do you like to fly in planes?
Early Reader · Change the reading level on the articleSome doors stay locked. People check who can enter. They use keys or cards. This keeps things safe. It helps us stay secure. Do you use a key?
Early Reader · Change the reading level on the articlePlugs give power to your things. A plug goes into a socket. This lets power flow to your toy. It helps your lamp turn on. It is very helpful. Do you see plugs at your home?
Early Reader · Change the reading level on the articleAn action is a tool inside a gun. It helps load and fire. It can also move old parts out. This helps the gun work well. It is a very busy part. Can you find one in a book?
Early Reader · Change the reading level on the articleBig telescopes use mirrors to see stars. The mirrors can bend in the wind. Small tools help keep the mirror flat. This helps us see far away. It makes the pictures clear. Do you like looking at the stars?
Early Reader · Change the reading level on the articleA mover helps machines work. It can push or turn things. It can use air or power. This helps tools move. It is very helpful for us. Can you think of a machine that moves?
Early Reader · Change the reading level on the articleAda is a way to talk to computers. It helps people write code. The code stays very safe. This helps big machines work well. It is named after a smart woman. Do you like computers too?
Early Reader · Change the reading level on the article