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 8 of 86
People study how we use facts. They learn how to keep facts safe. They find ways to share facts too. This helps us learn new things. It helps us work well. Do you like to learn facts?
Early Reader · Change the reading level on the articleTools help us share things. We use computers to work. We use phones to talk. These tools help us every day. They make life easier. Do you use a computer?
Early Reader · Change the reading level on the articleInk is a liquid for color. It makes marks on paper. You can use it to draw. You can use it to write. It helps us tell stories. Do you like to draw with ink?
Early Reader · Change the reading level on the articleTools help us measure things. They can tell us how hot or cold it is. They can even tell us how fast we go. These tools help us stay safe at home. They help in cars and big factories too. Do you use tools to measure…
Early Reader · Change the reading level on the articleParts can be the same. Many parts look just like each other. They fit into many things. This helps us fix broken toys. It also helps us build things fast. Can you find two things that are the same?
Early Reader · Change the reading level on the articleComputers use a special way to talk. It helps them share things. This way sends notes from one to another. It helps you use the web. It is very helpful. Do you like using computers?
Early Reader · Change the reading level on the articleAn invention is a new idea. It can be a new tool. People make things to help us. This can change our world. It is fun to think of new things. What would you invent?
Early Reader · Change the reading level on the articleThe iPhone is a small phone. It can do many things. You can use your finger to touch it. It helps us talk to friends. It is very fun to use. Do you like phones?
Early Reader · Change the reading level on the articleA sprinkler helps plants grow. It sprays water on the ground. The water falls like rain. This helps green grass and big farms. It is very helpful for us. Do you like to play in the water?
Early Reader · Change the reading level on the articleIsambard was a great builder. He made big ships. He made long trains. He built many strong bridges. These things help us travel today. Do you like to build things too?
Early Reader · Change the reading level on the articleA big dam sits on a river. It makes power for many homes. Two countries work together to run it. It helps us turn on lights. It is a wonder of the world. Do you like bright lights?
Early Reader · Change the reading level on the articleJack Kilby was a smart man. He made tiny parts for machines. These parts help our tools work. They make small things work well. He helped make the first small calculator. Can you find a tiny machine?
Early Reader · Change the reading level on the articleJames Watt was a smart man. He fixed steam engines. He made them work much better. This helped many people. His work changed the world. Do you like machines?
Early Reader · Change the reading level on the articleJamsetji Tata was a great man. He started many big businesses. He helped build many schools and hospitals. This helped many people in India. He was a kind leader. Do you like to help others?
Early Reader · Change the reading level on the articleJava is a way to talk to computers. It helps people make new things. You can use it on many machines. It can even work on big computers. It is very helpful for us. Do you like computers?
Early Reader · Change the reading level on the articleComputers use special code to work. This code helps websites move and change. It can make games on your screen. It also makes pictures move. It helps us use the web. Do you like playing web games?
Early Reader · Change the reading level on the articleJet planes fly very fast. They use big engines to move. These engines push hot air out. This helps the plane go up. They carry us far away. It is so much fun to fly! Do you like planes?
Early Reader · Change the reading level on the articleA jet engine helps planes fly. It blows hot air out the back. This push makes the plane go fast. It helps us travel far away. We can fly in big planes. Do you like to fly?
Early Reader · Change the reading level on the articleJohn Jacob Astor was a very rich man. He sold many animal skins. He also bought land in a big city. He helped build a library for people. He was a great leader. Do you like to read books?
Early Reader · Change the reading level on the articleA man named John made television. He used old things like hats. He made pictures move on a screen. This helps us watch shows at home. We can see many things! Do you like to watch TV?
Early Reader · Change the reading level on the articleJosiah was a man who made pots. He made many things like tea pots. He made them look very pretty. His pots helped people eat and drink. He also worked to help people be free. Do you like pretty pots?
Early Reader · Change the reading level on the articlePeople tell us what is happening. They share news every day. They find facts for us. This helps us know the world. It is very helpful. Do you like to read the news?
Early Reader · Change the reading level on the articleThis is a long path for ships. It connects two big seas. It helps boats save time. Many ships travel here every day. It is a very busy way to go. Do you like big ships?
Early Reader · Change the reading level on the articleA kite flies in the sky. It uses the wind to lift up. You hold a long string. The wind pulls the kite high. It is fun to watch. Do you want to fly one?
Early Reader · Change the reading level on the articleA knot is a way to tie rope. It can hold things tight. You can use it to tie a boat. It can also make pretty patterns. Knots help us do many jobs. Do you know how to tie one?
Early Reader · Change the reading level on the articleA knot tells us how fast things go. It helps ships and planes move. We use it to track wind and waves. It makes travel easy for us. Do you like to travel fast?
Early Reader · Change the reading level on the articleKonrad Zuse made a new machine. It was a very early computer. It helped people do math fast. This helps us use computers today. He was a very smart man. Do you like computers?
Early Reader · Change the reading level on the articleA lab is a special room. People use it to learn. They do tests there. They use tools like glass cups. It helps us find new things. It is a fun place to work. Do you want to see a lab?
Early Reader · Change the reading level on the articleA ladder helps us climb up. It has many steps. Some are made of wood. Some are made of metal. You can use one to reach high things. It helps us stay safe. Do you see ladders near your home?
Early Reader · Change the reading level on the articleA land mine is a hidden tool. It stays under the ground. It can hurt people or big cars. It goes bang when stepped on. These can stay dangerous for a long time. Do you see the signs?
Early Reader · Change the reading level on the articlePeople can make new land. They use rocks and dirt. They fill up the water. This makes a place for homes. It makes a place for parks. Do you live on new land?
Early Reader · Change the reading level on the articleLand transport moves things on the ground. We use cars and trains. People can also walk or ride bikes. This helps us get to new places. It is a great way to travel. How do you get to school?
Early Reader · Change the reading level on the articleA computer can learn to talk. It reads many books and words. This helps it answer your questions. It can even tell stories. It is very smart. Can you talk to a computer?
Early Reader · Change the reading level on the articleA laser is a bright light. It can cut things. It can cut wood or metal. The light is very hot. It melts the edge. This makes a shape. Do you like bright lights?
Early Reader · Change the reading level on the articleA lathe is a tool. It makes things spin fast. It can shape wood or metal. It makes smooth pens and bowls. It helps us make many things. Do you like things that spin?
Early Reader · Change the reading level on the articleRockets carry things into space. They can carry people or tools. Some rockets can be used again. This helps us learn about the stars. It is a big job! Do you want to go to space?
Early Reader · Change the reading level on the articleA lawn mower cuts grass. It keeps the grass even. Some mowers use small engines. Others use a battery. This helps make a nice yard. Do you like green grass?
Early Reader · Change the reading level on the articleLee de Forest was a great inventor. He made tools for radio. His work helped us hear voices far away. This made movies with sound possible. He was a very busy man. Do you like to build things?
Early Reader · Change the reading level on the articleLe Monde is a big paper in France. It tells people what is happening. Many people read it every day. It helps us know the news. It is a very famous paper. Do you like to read the news?
Early Reader · Change the reading level on the articleLeo was a smart man. He made a new kind of plastic. It stays hard even when it is hot. We use plastic for many things. It helps us every day. Do you like to use plastic?
Early Reader · Change the reading level on the articleA levee is a tall ridge of dirt. It sits next to a river. It stops the water from flooding. This keeps our homes safe. It is a very helpful wall. Have you ever seen one?
Early Reader · Change the reading level on the articleSome small parts make bright light. They use power to glow. These lights can be red or blue. They help us see in the dark. They are used in many things. Do you see them at night?
Early Reader · Change the reading level on the articleA lighthouse is a tall tower. It shines a bright light. This light helps boats stay safe. It shows them where rocks are. It helps them find the way home. Do you like bright lights?
Early Reader · Change the reading level on the articleLight helps us see. We use lamps to see at night. We can also use the sun. Light helps us read and play. It makes things look pretty. Do you like bright lights?
Early Reader · Change the reading level on the articleLinus Torvalds makes computer programs. He made a big tool called Linux. It helps many computers work. This helps us use technology every day. He is very smart at his job. Do you like using computers?
Early Reader · Change the reading level on the articleLinux is a way for computers to work. It helps many machines run. It is in phones and cars. It is even in space! It helps us do many things. Can you find it?
Early Reader · Change the reading level on the articleScreens use light to show us things. These screens use tiny bits to move light. They use a light behind the screen. This helps make pictures and colors. You see them on phones and TVs. Do you have a screen like this?
Early Reader · Change the reading level on the articleA lock keeps things safe. It stays shut to hide your things. You use a small metal key to open it. The key must fit just right. This helps only you get inside. Do you have a key?
Early Reader · Change the reading level on the article