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 34 of 86
Machines use sparks to cut metal. The sparks do not touch the metal. They jump through a special liquid. This makes tiny holes in the metal. It can shape very hard things. This helps us make tools. Do you like seeing…
Early Reader · Change the reading level on the articleSometimes power has a problem. This is called a fault. It can happen when a tree touches a wire. It can happen when lightning hits. Special tools help fix the power. They keep us safe. Do you use lights at home?
Early Reader · Change the reading level on the articlePeople used wires to send messages. The wires carried quick signals. These signals helped people talk fast. It was much faster than walking. It helped trains stay safe too. Do you like to send notes?
Early Reader · Change the reading level on the articleSome machines use heat to melt metal. This machine uses bright light to get hot. It can make a lot of steel. This helps us build big things. It is very strong. Do you like big machines?
Early Reader · Change the reading level on the articleAn e-bike is a special bike. It has a motor to help you. The motor helps you go up hills. It uses a battery for power. You can pedal it too. It makes riding fun! Do you want to try one?
Early Reader · Change the reading level on the articleAn electric car runs on power. It uses a big battery. You plug it in to charge. It is very quiet. This helps keep our air clean. Do you like quiet cars?
Early Reader · Change the reading level on the articleAn electrician helps us use power. They fix wires in our homes. They also work on big poles. This helps lights turn on. They keep us safe. Do you like to turn on lights?
Early Reader · Change the reading level on the articleThis train runs on power. It gets power from wires above. It can also use a battery. It is very quiet. It does not make loud smoke. It helps the Earth stay clean. Do you like trains?
Early Reader · Change the reading level on the articleThe power in your home must be steady. It helps your lights stay bright. If it is not steady, things might break. Good power helps your tools work well. Do you like bright lights?
Early Reader · Change the reading level on the articleWires bring power to us. It travels from big machines. It goes to your house. This power helps your lights work. It makes things run. It is very helpful. Can you find a plug?
Early Reader · Change the reading level on the articleAn electric stove helps us cook. It uses power to make heat. This heat warms your food. It is easy to use in a kitchen. We can bake yummy treats. Do you like warm food?
Early Reader · Change the reading level on the articleSome cars use power from a plug. This power helps them move. They use big batteries to save energy. This helps keep our air clean. It is good for our world. Do you want to ride in one?
Early Reader · Change the reading level on the articleWe use power to run things. This power can turn on lights. It helps us cook and drive. It makes our homes bright and warm. It is very helpful for us. Do you use it every day?
Early Reader · Change the reading level on the articleMetal can block invisible waves. These waves travel through the air. Metal acts like a wall. It keeps the waves out. This helps our tools work well. It keeps things safe for us. Can you find metal near you?
Early Reader · Change the reading level on the articleEA makes video games. They make games for computers. They also make games for consoles. Many people play their games. Do you like to play games?
Early Reader · Change the reading level on the articleSmall parts work together in a group. They use wires to move power. This helps tools do jobs. It makes your phone work. It is like a tiny team. Can you find a tool with these parts?
Early Reader · Change the reading level on the articleSmall parts help machines work. They use power to do jobs. Some parts make light. These parts are in your toys. They help things run. Do you see small parts in your home?
Early Reader · Change the reading level on the articleSmart tools help us make tiny chips. These chips go in many things. They are too small to draw by hand. The tools help us plan them. This makes our gadgets work well. Do you like tiny machines?
Early Reader · Change the reading level on the articlePeople use tiny parts to move power. These parts help make things work. They are in your phone and radio. This helps us talk to friends. It is very cool! Do you like gadgets?
Early Reader · Change the reading level on the articleSome locks use power to work. They do not need a metal key. You can use a code to open them. This helps keep things safe. It is very cool! Can you find a lock like this?
Early Reader · Change the reading level on the articleWe use machines to see and hear. These machines use power. They show us videos. They play music for us. They help us talk to friends. It is like magic! Do you like to watch videos?
Early Reader · Change the reading level on the articleSome tools make a steady beat. This beat is made of power. It helps your phone work. It also helps your watch tick. These tools are in many things. Can you find one in your house?
Early Reader · Change the reading level on the articleSome planes help in a war. They use tools to stop radio signals. They can also hide from radar. This helps the pilots stay safe. These planes are very special. Do you like planes?
Early Reader · Change the reading level on the articleWe can use power to coat things. This puts a thin metal layer on an object. It can make things look shiny. It also helps them stay strong. It is like giving an object a new skin. Do you like shiny things?
Early Reader · Change the reading level on the articleA man named Du Pont lived long ago. He moved to a new land. He made things for tools. He knew how to make good powder. This helped his family a lot. Do you like to learn new things?
Early Reader · Change the reading level on the articleSome trains run high up. They use tracks above the street. This helps them move fast. You can see them from below. They are very cool. Have you seen a high train?
Early Reader · Change the reading level on the articleAn elevator helps a plane move. It is at the back. It can move up or down. This makes the nose go up or down. It helps the plane fly well. Do you want to fly a plane?
Early Reader · Change the reading level on the articleA big bridge goes over the water. It can swing to let ships pass. It helps trains cross the canal. This bridge is in Egypt. It is a very long bridge. Do you like big bridges?
Early Reader · Change the reading level on the articleElias Howe was a smart man. He made a sewing machine. It helps make clothes very fast. It helps you wear nice things. He was a great inventor. Do you like to sew?
Early Reader · Change the reading level on the articleEli Lilly made medicine. He started a big company. He made medicine taste like fruit. This helped people feel better. He also helped many people. Do you like fruit flavor?
Early Reader · Change the reading level on the articleElisha Otis made a safe way to go up. His tool stops a lift if a rope breaks. This helps people ride in lifts safely. It makes tall buildings better for us. Do you like riding in a lift?
Early Reader · Change the reading level on the articleElizabeth Arden was a smart woman. She made things to help people look nice. She started her own big business. It helped many women feel good. Do you like to use pretty things?
Early Reader · Change the reading level on the articleElizabeth Holmes had a big idea. She wanted to test blood. She said it could use just a tiny drop. But her idea was not true. This hurt many people. Can you be honest when you work?
Early Reader · Change the reading level on the articleElizabeth Mallet made news sheets. She ran a print shop. She made the first daily news. This helped people learn facts. She was a very busy worker. Do you like to read news?
Early Reader · Change the reading level on the articleElle is a big magazine. It shows pretty clothes. It also talks about life. People all over the world read it. It helps us see new things. Do you like to look at magazines?
Early Reader · Change the reading level on the articleEl Mundo is a big paper. It tells news in Spain. It has many stories to read. It helps us know what is happening. We can read it on paper or online. Do you like to read the news?
Early Reader · Change the reading level on the articleEl País is a big newspaper. It is from a place called Spain. It tells many stories in Spanish. People read it to learn news. It helps us know what is happening. Do you like to read news?
Early Reader · Change the reading level on the articleThis is a big paper from Mexico. It tells stories about the world. People read it on paper and online. It helps us know what is happening. Do you like to read the news?
Early Reader · Change the reading level on the articleEmacs is a tool for typing. It helps you write words on a computer. You can change it to do new things. It can even play small games. It is very helpful for work. Do you like to type?
Early Reader · Change the reading level on the articleSome machines have tiny computers inside. These help a tool do one job. They are in watches and cars. They help things work well. It is very cool! Can you find one in your house?
Early Reader · Change the reading level on the articleThese are big planes. They carry many people. They fly through the sky. They help us travel to new places. We can sit inside and look out. Do you like to fly in planes?
Early Reader · Change the reading level on the articleNew tools are being made. Some tools are very new. They can change our world. They can help us a lot. We can learn more every day. What new things will you see?
Early Reader · Change the reading level on the articleEMI was a big music group. It made many songs. It helped famous bands like the Beatles. You can listen to their music today. Do you like to listen to songs?
Early Reader · Change the reading level on the articleEmirates is a big airline. It flies many planes. These planes fly to many cities. They help people travel far. It started a long time ago. Do you like to fly in planes?
Early Reader · Change the reading level on the articleEmoji are little pictures. You see them on screens. They show how you feel. You can use them in a message. They help us talk. Do you have a favorite one?
Early Reader · Change the reading level on the articleThe tail helps a plane fly. It keeps the plane steady. It works like feathers on an arrow. This helps you stay on track. The tail is very helpful. Do you see a tail on a plane?
Early Reader · Change the reading level on the articleAn emulator acts like a copy. It makes one computer act like another. This lets you play old games. It can even make a printer act like a different kind. It is like a pretend machine. Do you like old games?
Early Reader · Change the reading level on the articleThis paint dries very hard. It can stay shiny. It stays strong in the sun. It helps things last a long time. It is great for floors. Do you like shiny things?
Early Reader · Change the reading level on the article