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 30 of 86
Special paths help us ride bikes. They can be painted lines. Some have walls to keep us safe. These paths make riding easy. They help many people go places. Do you like to ride your bike?
Early Reader · Change the reading level on the articleA cyclone cleans the air. It spins air in a fast circle. This spin pushes dust to the sides. The dust falls to the bottom. This helps your vacuum work well. It keeps our air clean too. Do you see dust in the air?
Early Reader · Change the reading level on the articleThis is a big news paper. It comes from a place called Sweden. People read it to learn news. It tells stories from all over. It has been around a long time. Do you like to read the news?
Early Reader · Change the reading level on the articleLong ago, people made the first photos. They used a shiny silver plate. It looks like a tiny mirror. These photos help us see the past. They are very special. Do you like old photos?
Early Reader · Change the reading level on the articleThe Mail is a big newspaper. It comes from London. Many people read it every day. It tells stories about the world. It has many news stories for you. Do you like to read news?
Early Reader · Change the reading level on the articleThis is a big newspaper. It tells stories in India. Many people read it every day. It helps us know what is happening. It is very large. Do you like to read news?
Early Reader · Change the reading level on the articleThis is a big newspaper. It tells news in a special way. Many people read it every day. It is very popular in India. It helps us learn new things. Do you like to read news?
Early Reader · Change the reading level on the articleThings can change and break. This is called damage. It can happen to toys or buildings. It can even happen to plants. We can sometimes fix things. Have you ever fixed a broken toy?
Early Reader · Change the reading level on the articleSome old swords look like water. They have pretty lines on them. These blades were very strong. They could stay sharp for a long time. This steel was very special. Do you like patterns?
Early Reader · Change the reading level on the articleDan Bricklin makes things for computers. He made a tool to help with math. It helps people work very fast. This tool helps us use computers well. He is a smart man. Do you like using computers?
Early Reader · Change the reading level on the articleSome things can be unsafe. They can catch fire. They can also hurt us. We use signs to stay safe. These signs are shaped like diamonds. Do you see signs on trucks?
Early Reader · Change the reading level on the articleA big group of companies is in Africa. It makes things like sugar and salt. It also makes cement for buildings. Many people work there. This helps many people. Do you like sugar?
Early Reader · Change the reading level on the articleDaniel was a man who made tools. He made things that shoot. He worked very hard. He also helped build a hospital. His work helped many people. Do you like to build things?
Early Reader · Change the reading level on the articleDaniel Ek is a man from Sweden. He helped start Spotify. Now many people use it for music. It helps us listen to songs. He also works with new tools. Do you like to listen to music?
Early Reader · Change the reading level on the articleDaniel was a man who worked with ships. He owned many big boats. He also owned hotels and salt mines. He used his money to help find cures for sickness. He was a very busy man. Do you like big ships?
Early Reader · Change the reading level on the articleDaniel Pearl was a writer. He wrote stories for a big paper. He traveled to many places. He went to help people learn the truth. Sadly, he was taken by bad men. We remember him today. Do you like to read stories?
Early Reader · Change the reading level on the articleDaniel is a man who writes. He looks at TV shows. He writes about what he sees. This helps us learn about news. He also looks at the web. Do you like to watch TV?
Early Reader · Change the reading level on the articleDan Rather was a news man. He told people what was happening. He worked on TV for many years. He told stories about the world. He helped people stay safe. Do you like to watch the news?
Early Reader · Change the reading level on the articleThis is a long path for boats. It goes from a big river to the sea. It helps ships travel a short way. This makes moving things easier for us. It is a very big job. Do you like boats?
Early Reader · Change the reading level on the articleThis is a very long bridge. It helps fast trains go by. It is the longest bridge in the world. It runs through many towns. It is a big thing to see. Do you like big bridges?
Early Reader · Change the reading level on the articleThe dao is a Chinese sword. It has one sharp edge. Some are straight. Some are curved. People used them a long time ago. They are very strong. Do you like old tools?
Early Reader · Change the reading level on the articleSome parts of the web are hidden. You need a special tool to find them. These places keep people's names secret. It helps people talk without being seen. Some people use it for bad things. Can you find the hidden web?
Early Reader · Change the reading level on the articleA dashpot helps things move slowly. It can stop a door from slamming. It makes the motion soft and gentle. This keeps things safe for you. It is very helpful! Do you see things that move slowly?
Early Reader · Change the reading level on the articleThe Rafale is a fast plane. It flies in the sky. It comes from a place called France. This plane helps its country. It can do many jobs. Do you like planes?
Early Reader · Change the reading level on the articleA data center is a big room. It holds many computers. These computers keep our facts safe. They help us use the web. We use them every day. Do you like using computers?
Early Reader · Change the reading level on the articleComputers look at lots of facts. They find patterns in the facts. This helps us learn new things. It can help a store sell more. It is like a treasure hunt. Do you like to find patterns?
Early Reader · Change the reading level on the articleA data model is a plan. It helps computers keep things in order. It tells the computer how to group facts. This helps us find what we need. It makes work easy for us. Do you like to keep things neat?
Early Reader · Change the reading level on the articlePeople use facts to solve problems. They look at many tiny details. These details can be pictures or words. This helps us learn new things. It helps us make good choices. Do you like to find secrets in things?
Early Reader · Change the reading level on the articleScientists learn by sharing what they find. They show their work to others. This helps us learn more together. It makes science very strong. We can check their work too. Do you like to share your toys?
Early Reader · Change the reading level on the articleComputers use groups of information. These groups help computers work. They can be numbers or words. This helps keep things neat. It makes computer work easy. Do you like to keep things neat?
Early Reader · Change the reading level on the articleDave Cutler helps computers work. He makes the programs inside them. He even helped make the Xbox. His work helps us play games. He is very good at his job. Do you like to play games?
Early Reader · Change the reading level on the articleDavid Brinkley was a news man. He spoke on TV. He told people what was happening. He worked for a long time. He won many awards. He was very good at his job. Do you like to watch the news?
Early Reader · Change the reading level on the articleDavid Geffen works with music. He helps make many songs. He also makes movies. He gives much money to schools. He is very kind to help others. Do you like music?
Early Reader · Change the reading level on the articleDavid is a man who builds things. He builds things for computers. He also drives fast cars in races. This helps people use the web. He is very good at many jobs. Do you like fast cars?
Early Reader · Change the reading level on the articleDavid Ogilvy was a man who sold things. He wrote ads for big cars and soap. He used facts to help people choose. He worked very hard to do a good job. Do you like to see ads?
Early Reader · Change the reading level on the articleDavid Packard was a smart man. He helped start a big company. They made tools for sound and computers. He also gave money to help the ocean. He liked to help people. Do you like to build things?
Early Reader · Change the reading level on the articleDavid Sarnoff helped us hear radio. He also helped us see TV. He worked very hard for his big ideas. This helps many people today. Do you like to watch TV?
Early Reader · Change the reading level on the articleA deadbolt is a strong lock. It sits inside a door. It keeps your home safe. You use a key to turn it. It stays shut very well. Do you have a lock like this?
Early Reader · Change the reading level on the articleThis is a glass tool. It helps catch water. It works when things get hot. It helps make new things. It is very useful. Do you like science?
Early Reader · Change the reading level on the articleDebian is a way to run computers. It uses free tools. Many people work together to make it. It helps computers do big jobs. It is very old and good. Do you like computers?
Early Reader · Change the reading level on the articleSometimes computers have small mistakes. These are called bugs. People find the bugs to fix them. This helps the computer work well. It is like being a detective. Can you find a bug?
Early Reader · Change the reading level on the articleComputers use special sets of rules. You tell the computer what you want. You do not tell it every step. This helps the computer work well. It makes writing code easier for us. Can you think of a goal?
Early Reader · Change the reading level on the articleDeep Blue was a big computer. It played a game called chess. It was very good at the game. It even beat a world champion. This was a big deal for us. Do you like to play games?
Early Reader · Change the reading level on the articleComputers can learn like us. They use many layers to think. These layers help them see things. They can see a face in a picture. This helps them do smart work. It is very cool! Do you like smart computers?
Early Reader · Change the reading level on the articlePeople want to find rocks in the deep sea. These rocks are very far down. They have metals inside. We use these metals for cars and phones. This helps us every day. Do you like looking at the sea?
Early Reader · Change the reading level on the articleSome parts of the web are hidden. You cannot find them with a search. They stay out of sight. You might need a secret code to see them. This helps keep your things safe. Do you like to find secrets?
Early Reader · Change the reading level on the articleSome oils keep bugs away. You can put it on skin or clothes. It stops flies and mosquitoes. It helps you stay safe outside. It is very helpful! Do you like to play outdoors?
Early Reader · Change the reading level on the articleThe Dash 8 is a big plane. It flies people to new places. It has two big engines. Some of these planes are very quiet. This helps people ride in peace. Do you like to fly in planes?
Early Reader · Change the reading level on the article