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 31 of 86
The Comet was a fast plane. It used jet engines to fly. It was the first plane like this for people. It was very quiet and smooth. It helped us fly far away. Do you like to fly in planes?
Early Reader · Change the reading level on the articleThe Delhi Metro is a fast train. It travels through a big city. The trains use many colored lines. They help many people get around. This helps keep the air clean. Do you like riding trains?
Early Reader · Change the reading level on the articleComputers use marks to sort things. These marks show where one thing ends. They show where a new thing starts. This helps the computer read well. It keeps things in the right spots. Do you like to sort your toys?
Early Reader · Change the reading level on the articleDell makes computers. They sell them to you. They also make printers and webcams. These tools help us work. A man named Michael Dell started it. He began in a college room. Do you use a computer?
Early Reader · Change the reading level on the articleDeloitte is a very big group. It helps many people with work. It has many offices in many lands. This helps businesses stay strong. It is a big team. Do you want to learn more?
Early Reader · Change the reading level on the articleDelta is a big airline. It flies many planes. These planes go to many places. You can fly far away in them. It is a very old company. Would you like to fly in a plane?
Early Reader · Change the reading level on the articleSome planes have wings like a triangle. These wings are very strong. They can help a plane fly fast. They also help a plane carry fuel. This kind of wing is very cool. Do you like fast planes?
Early Reader · Change the reading level on the articleBig walls help keep the land dry. These walls stop the sea from coming in. They help people stay safe from floods. This is very important for the land. It is a big job to do. Do you like the sea?
Early Reader · Change the reading level on the articleYour home uses power. Sometimes you use a lot. Sometimes you use a little. It helps us plan power. We can see how much we need. Do you use many lights at once?
Early Reader · Change the reading level on the articleWe use much power every day. Sometimes, we need to use less. We can wait to use the dryer. This helps the power stay on. It can even save money. Do you turn off lights to help?
Early Reader · Change the reading level on the articleSome buses do not have a set path. They go where you need them to go. You can call them on a phone. This helps people in small towns. It is a smart way to travel. Do you like to ride the bus?
Early Reader · Change the reading level on the articleDemis Hassabis is a smart man. He helps computers learn. He makes tools to help us stay healthy. His work helps doctors find new cures. He even won a big prize for his work. Do you like computers too?
Early Reader · Change the reading level on the articleThis is a news show. It tells many stories. People listen on the radio. People watch it on TV. It helps us learn. Do you like to hear the news?
Early Reader · Change the reading level on the articleMachines can find hidden sounds. They take signals from the air. Then they turn them into music. This helps us hear things far away. It is like magic for your ears! Can you hear the radio?
Early Reader · Change the reading level on the articlePeople sometimes tear down old buildings. They use big machines to do it. Some machines use heavy weights to swing. Others use tools to break walls. This helps make room for new things. Have you seen a big machine work?
Early Reader · Change the reading level on the articleA bike part moves the chain. It helps you change gears. This makes riding easier. It helps you go up hills. It is very handy. Do you like to ride your bike?
Early Reader · Change the reading level on the articleDer Spiegel is a big news book. It comes from a place called Germany. It tells people what is happening. It helps us learn the truth. Do you like to read news?
Early Reader · Change the reading level on the articleA desktop computer stays in one place. It sits on or near a desk. It uses a screen and a keyboard. You can use it for work. It helps us do many things. Do you like to use computers?
Early Reader · Change the reading level on the articleYou can make books on a computer. It helps you put words and pictures on a page. You can make a menu or a magazine. This helps people share their ideas. It is fun to make things! Do you like to draw?
Early Reader · Change the reading level on the articleSome computer steps are the same every time. If you start the same way, you end the same way. It is like a path that never changes. This helps us know what to expect. It makes things easy to use. Do you like things…
Early Reader · Change the reading level on the articleA detonator is a tiny tool. It helps big things go boom. It uses a small spark or fire. This starts a much larger blast. It helps people move rocks. It is very important to be safe. Can you imagine a tiny spark?
Early Reader · Change the reading level on the articleA big company runs trains in Germany. They carry many people to new places. They also move heavy goods on tracks. These trains help many people every day. It is a very big job. Do you like to ride on a train?
Early Reader · Change the reading level on the articleThis is a big bank. It is in Germany. It helps people with money. It is very old. It started a long time ago. Do you know where Germany is?
Early Reader · Change the reading level on the articleThis is a big museum. It is in a city in Germany. It has many cool things to see. You can see planes and trains. It helps us learn. Do you want to visit?
Early Reader · Change the reading level on the articleDW is a news group from Germany. It tells stories to the whole world. They use many ways to talk. You can watch them on a screen. You can also listen to them. It helps us learn about new things. Do you like to learn…
Early Reader · Change the reading level on the articleDeviantArt is a place for art. People share art they make. They share photos and films too. It helps people see new things. You can see art from all over. Do you like to draw?
Early Reader · Change the reading level on the articleA computer needs help to work. It uses a special tool to talk. This tool is like a translator. It helps the computer use a printer. It helps the computer use a mouse. It makes everything work well. Do you use a computer?
Early Reader · Change the reading level on the articleDeWitt Wallace made a magazine. It was easy to read. He and his wife started it. He gave money to help schools. He helped many people. Do you like to read magazines?
Early Reader · Change the reading level on the articleDhanin is a man from Thailand. He runs a very big company. He helps people when they are sick. His family is very rich. He is a kind man. Do you like to help others?
Early Reader · Change the reading level on the articleDhirubhai Ambani was a man who sold things. He started a big company. He worked hard to grow it. His work helped many people in India. He was very famous. Do you like to build things?
Early Reader · Change the reading level on the articleThis company moves many things. They carry mail and big boxes. They use planes and trucks. They even have electric vans. This helps them work well. They help people all over the world. Do you like getting mail?
Early Reader · Change the reading level on the articleDiane Sawyer tells news on TV. She works for a big news group. She talks to many people. She helps us know what is happening. She is a very good reporter. Do you like watching the news?
Early Reader · Change the reading level on the articleSome engines use heat to move. They squeeze air very tight. This makes the air hot. Then, fuel is added. The heat makes the fuel burn. This helps big trucks move. Do you like big trucks?
Early Reader · Change the reading level on the articleDiesel is a special liquid. It helps big trucks move. It can even come from plants. This fuel helps us travel far. It is very useful. Do you see big trucks?
Early Reader · Change the reading level on the articleA diesel engine moves a train. It uses fuel to work. This engine is very strong. It helps carry heavy things. It is a great machine. Do you like trains?
Early Reader · Change the reading level on the articleDie Welt is a news paper. It comes from a place called Germany. It tells people about the world. It can be found in many lands. It helps us learn new things. Do you like to read the news?
Early Reader · Change the reading level on the articleThis is a German paper. It comes out every week. It tells us big stories. It helps us learn. We can read it on paper or on a screen. Do you like to read news?
Early Reader · Change the reading level on the articleThis is a big math machine. It uses wheels to count. It can do hard math fast. This helps people find the right numbers. It is very cool! Can you imagine a machine that thinks?
Early Reader · Change the reading level on the articleCars use special parts to turn. These parts help the wheels spin. One wheel can go fast. The other wheel can go slow. This helps when you turn a corner. It makes your ride smooth. Do you like car rides?
Early Reader · Change the reading level on the articleTwo people can share a secret. They use math to do it. They do not need to meet. It keeps their talk safe. This helps us use the web. Can you keep a secret?
Early Reader · Change the reading level on the articleThis part helps machines talk. It copies a small signal. Then it makes it strong. This helps things work well. It is like a helper. Do you like machines?
Early Reader · Change the reading level on the articleA digital clock shows the time with numbers. It can be on a phone or an oven. These clocks use electricity to work. They help us know when to wake up. Do you have a clock like this?
Early Reader · Change the reading level on the articleYou can get games online. You do not need a disc. You just download them to your machine. This helps many people play. It is very fast now. Do you like to play games?
Early Reader · Change the reading level on the articleComputers use tiny signals. These signals are just on or off. This helps them work well. They can store your favorite songs. It makes life fun! Do you like using computers?
Early Reader · Change the reading level on the articleComputers can make maps of the ground. These maps show hills and valleys. Some maps show trees and buildings too. They help us see the shape of Earth. They even show the shape of Mars! Do you like looking at maps?
Early Reader · Change the reading level on the articlePeople use computers to study old things. They use them to read books fast. They can also look at art on a screen. This helps us learn about our world. It is a fun way to learn. Do you like using computers to learn?
Early Reader · Change the reading level on the articleYou can see things on a screen. These are digital things. They can be songs or movies. You can use them on a phone. They help us talk to friends. Do you like watching videos?
Early Reader · Change the reading level on the articleYou can watch TV on a phone. It sends shows through the air. This helps you see things on the go. It works in a car too. It is very fun to use. Do you like watching shows?
Early Reader · Change the reading level on the article