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 76 of 86
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Some machines use a beat to work. This beat is like a clock. It tells the parts when to move. All parts move at the same time. This helps the machine work well. Can you hear a clock tick?
Early Reader · Change the reading level on the articleComputers use special rules to talk. These rules help them read code. You must use the right words. If the rules are wrong, the computer gets stuck. It helps us tell them what to do. Do you like to play with computers?
Early Reader · Change the reading level on the articleA computer has a boss. The boss is the system. A program asks the boss for help. It might want to use the camera. The boss says yes or no. It keeps things safe. Do you use a computer?
Early Reader · Change the reading level on the articleA tiny chip runs your tools. It is inside your phone. It holds many parts in one spot. This helps the phone save power. It makes small things work well. Do you have a smart watch?
Early Reader · Change the reading level on the articlePeople plan how things work. They look at all the small parts. They see how parts work together. This helps make good tools. It helps us build big things. Do you like to build things?
Early Reader · Change the reading level on the articleBig projects need a good plan. We use many parts to make one big thing. All the parts must work well together. This helps things like space ships work. It is like a big team. Do you like working in a team?
Early Reader · Change the reading level on the articleA computer needs help to work. It uses special tools to run. These tools help the machine. They let you play games. They also let you draw. It is like a base for other things. Do you use a computer?
Early Reader · Change the reading level on the articleComputers have a clock inside them. It counts tiny ticks to tell time. This helps the computer know the day. It helps us know when to play. It is very helpful! Do you know what time it is?
Early Reader · Change the reading level on the articleThe T-34 was a big tank. It was made in a place called the Soviet Union. It had strong metal walls. These walls helped keep the crew safe. Many of these tanks were built. Can you imagine a tank that big?
Early Reader · Change the reading level on the articleThese are big tanks. They have strong metal skins. They can drive on many lands. Many armies around the world use them. They are very famous. Have you ever seen a tank?
Early Reader · Change the reading level on the articleA tablet is a small computer. It is thin and flat. You can use your finger on the screen. It can play movies and books. It is fun to use! Do you like to use tablets?
Early Reader · Change the reading level on the articleSome papers tell big stories. They use many pictures. They often talk about famous people. These stories can be untrue. This can hurt people. Do you like reading news?
Early Reader · Change the reading level on the articleThere are two big bridges. They cross over the water. One old bridge fell down in the wind. Now we have new, strong bridges. They help cars get across. Do you like big bridges?
Early Reader · Change the reading level on the articleTadashi Yanai sells clothes. He started a big shop. He helps students go to school. He also helps people after big storms. He is very good at business. Do you like to shop for clothes?
Early Reader · Change the reading level on the articleTaikichiro Mori was a man from Japan. He built many big buildings. He was very rich. He also taught at a school. His family still runs his company. It is a big job. Do you like tall buildings?
Early Reader · Change the reading level on the articleTaipei 101 is a very tall building. It is in a place called Taiwan. It has many floors. It is very big and strong. It stays safe in wind and shakes. People like to see the lights. Would you like to go up?
Early Reader · Change the reading level on the articleThe Taipei Metro is a fast train. It helps people move in the city. It has many stations. This helps stop too many cars. It is a great way to travel. Do you like riding trains?
Early Reader · Change the reading level on the articleFast trains run in Taiwan. They go from north to south. The trains move very fast. They help people travel quickly. It is fun to ride. Do you like fast trains?
Early Reader · Change the reading level on the articlePeople talk on the radio. They talk about many things. They talk about sports. They talk about news. You can even call to talk too. It is fun to listen. Do you like to talk?
Early Reader · Change the reading level on the articleThe talwar is a curved sword. It comes from India. The blade is bent. It has a metal handle. This tool was used long ago. Do you like old things?
Early Reader · Change the reading level on the articleHisashige Tanaka was a great maker. He made many clever things. He built dolls that could move. He also made big steam engines. His work helped start a big company. Do you like to build things?
Early Reader · Change the reading level on the articleA tandem is a special bike. It has seats for more than one person. People sit one behind the other. You can ride with a friend. It is fun to go fast together. Do you want to try one?
Early Reader · Change the reading level on the articlePeople make leather from animal skins. Workers clean the skins in water. They take the hair off too. Then they use things from trees. This makes the skin very strong. Now we can make shoes and bags. Do you wear…
Early Reader · Change the reading level on the articleTaobao is a place to shop online. You can find many things there. People sell new things in many shops. You can use it to buy stuff. It is a very big shop. Do you like to shop online?
Early Reader · Change the reading level on the articleA tape measure is a long ruler. It can bend and roll up. It helps us find how long things are. This is good for building. It is a handy tool. Do you want to measure something?
Early Reader · Change the reading level on the articleA tappet is a small part. It helps an engine work. It moves parts up and down. This helps the engine run well. It is a very busy part! Do you like cars?
Early Reader · Change the reading level on the articleTap water comes from a tap. It flows through pipes to your house. We use it to drink and cook. It also helps us wash. This water is very useful for us. Do you use tap water every day?
Early Reader · Change the reading level on the articleA big wall holds back a river. It is in a place called Pakistan. The wall makes a large lake. This lake helps make power for homes. It also helps farms grow food. Can you see the big water?
Early Reader · Change the reading level on the articleTarget is a big store. It sells many things. You can find food there. You can find toys too. It helps families shop. Do you like to shop?
Early Reader · Change the reading level on the articleA Taser is a tool for police. It shoots two small darts. The darts have thin wires. These wires carry a quick zap of power. This helps a person stop moving. It can be dangerous, so we must be careful. Have you seen a…
Early Reader · Change the reading level on the articleTata is a big group of companies. They make many things. They make cars and tea. They even have a big hotel. They help people in India. Do you use things they make?
Early Reader · Change the reading level on the articlePeople write to help you. They write books to show how things work. They use pictures too. This helps you use new toys or tools. It makes things easy to do. Do you like to read how to build things?
Early Reader · Change the reading level on the articlePeople help you fix your tools. They help with computers or games. You can talk to them on the phone. They can also help through email. This helps when things break. It is good to get help. Do you use a computer?
Early Reader · Change the reading level on the articleA technical is a special truck. It is a small car for work. People put big tools on the back. It can go very fast. This helps people move in the sand. Do you like fast trucks?
Early Reader · Change the reading level on the articleMovies can have bright colors. This helps us see beautiful worlds. It makes films look real. We can see pretty red and green. It makes movies fun to watch. Do you like color movies?
Early Reader · Change the reading level on the articleThe Technion is a big school. It is in a place called Haifa. People go there to learn about science. It helps people build new things. It is a very old school. Do you like science?
Early Reader · Change the reading level on the articleMany tools are joining together. A phone can now do many things. It can play games. It can take photos. It can even go on the web. This helps us every day. Do you use many tools at once?
Early Reader · Change the reading level on the articleNew tools change how we live. A wheel helps us move things. New machines change our world. They change how we act. This helps us grow. Do you like new tools?
Early Reader · Change the reading level on the articleComputers might get very smart. They could learn to fix themselves. This would make them even smarter. This could change our whole world. It is a big idea. Do you think computers will be smart?
Early Reader · Change the reading level on the articleNew things spread like a wave. Some people try them first. Then, more people join in. Soon, almost everyone uses them. It happens in small steps. Do you like new toys?
Early Reader · Change the reading level on the articlePeople look at new tools. They check if tools are good. Some tools might change our world. We want to be ready. This helps us make good choices. Do you like new tools?
Early Reader · Change the reading level on the articleNew things go through stages. First, people dream up an idea. Then, many people start to use it. It helps us in many ways. It is very cool! Do you like new things?
Early Reader · Change the reading level on the articleNew ideas can help everyone. People share smart ways to make things. They turn new ideas into tools. These tools help us every day. It is a way to help the world. Do you like new things? Can you think of a new tool?
Early Reader · Change the reading level on the articleTed Koppel tells the news. He talks on TV. He was on a show called Nightline. He helps us learn about the world. He is a news man. Do you watch the news?
Early Reader · Change the reading level on the articleThe Tehran Metro is a big train system. It moves many people every day. Most of the tracks are under the ground. It helps people get around the city. It is a very busy place. Do you like riding trains?
Early Reader · Change the reading level on the articlePeople use tools to talk far away. These tools help us send news. We use phones and the internet. They help us stay close to friends. It is like magic! Do you like to talk on the phone?
Early Reader · Change the reading level on the articleTelegram is a way to talk. You can send notes to friends. You can also call them. It works on many phones. Many people use it every day. Do you like to send notes?
Early Reader · Change the reading level on the articleTools can send news from far away. They measure things like heat or air. Then they send that news to us. This helps us learn about space or weather. It is like a tiny messenger. Can you think of a way to send a message?
Early Reader · Change the reading level on the article