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 44 of 86
People use radio to hear things. It sends music through the air. You can listen to talk too. It helps us hear news far away. It is fun to listen. Do you like to hear music?
Early Reader · Change the reading level on the articlePeople make many things in big shops. They make soap and paint. Long ago, they made things in small groups. Now, they use big lines to make more. This helps us have what we need. Do you like to make things?
Early Reader · Change the reading level on the articlePeople have used tools to count for a long time. Long ago, they used pebbles in sand. Later, they made machines to help. These machines help us solve hard math. They help us do many things today. Do you like to use…
Early Reader · Change the reading level on the articlePeople have used tools to count for a long time. They used sticks and pebbles. They even used sand. This helped them solve problems. Now we use computers. Do you like to use computers?
Early Reader · Change the reading level on the articlePeople use secret codes. These codes hide words. They keep secrets safe. Long ago, people used pen and paper. Now, we use fast computers. This helps us talk in private. Do you like secrets?
Early Reader · Change the reading level on the articlePeople found power in fish. These fish give small shocks. Long ago, people used them to help. Now, we use power to light our homes. It helps us every day. Do you like lights?
Early Reader · Change the reading level on the articlePeople made tools with tiny power. These tools help us talk. They help us watch shows. They help us use computers. Now we can carry them. They are small and fast. Do you like your gadgets?
Early Reader · Change the reading level on the articlePeople love to watch moving pictures. Long ago, people used light to show images. They used magic boxes to tell stories. Now, we watch movies on big screens. It is so much fun! Do you like movies?
Early Reader · Change the reading level on the articlePeople want to know news. Long ago, people told news by talking. Travelers brought news to towns. Then, machines helped print news on paper. Now, we see news on screens. It helps us learn. How do you find news?
Early Reader · Change the reading level on the articlePeople use many things to make tools. Long ago, they used rocks. They also used bone and clay. Later, they used metals like gold. This helps us build our world. Do you like to build things?
Early Reader · Change the reading level on the articlePeople use phones to talk. Long ago, phones were very big. They were too heavy to carry. Now, phones are small. You can hold one in your hand. They help us stay close. Do you like using a phone?
Early Reader · Change the reading level on the articlePaper is a thin thing for writing. It is made from plants. People in China made it a long time ago. We use it for books and art. It helps us share ideas. Do you like to draw on paper?
Early Reader · Change the reading level on the articleWe can take pictures with light. A box can show a picture. It uses light to draw. Now we use phones to take photos. It is fun to see the world. Do you like taking photos?
Early Reader · Change the reading level on the articlePeople use stamps to make marks. They can print on cloth. They can print on paper. This helps us share ideas. It is fun to learn! Can you find a stamp?
Early Reader · Change the reading level on the articleSome tools use waves to see. These waves bounce off metal. They help us find ships in fog. They even help us see the weather. This helps keep us safe. Can you see far away with waves?
Early Reader · Change the reading level on the articlePeople made paths a long time ago. Animals helped carry things on these paths. Some paths had flat stones. This helped people travel. Now we have many roads. Do you like to go on a road trip?
Early Reader · Change the reading level on the articlePeople have dreamed of robots for a long time. Long ago, people told stories about them. Some stories had gold people that could talk. Later, makers built machines that could move. Now, robots work in big factories.…
Early Reader · Change the reading level on the articleRockets can fly high. Long ago, people used them for arrows. They used fire to make them go. This helped them move fast. Now we use them to go to space. Do you want to fly in a rocket?
Early Reader · Change the reading level on the articleComputers use sets of rules to work. These rules tell the machine what to do. Long ago, people had to move wires to change them. Now, rules help us use computers every day. Do you use a computer?
Early Reader · Change the reading level on the articlePeople find ways to talk far away. Long ago, they used drums. They also used smoke signals. Later, they used wires and light. This helps us talk to friends. Do you like to talk on a phone?
Early Reader · Change the reading level on the articleTV lets us see moving pictures. It shows us many things. We can watch shows at home. It is a lot of fun. Do you like to watch TV?
Early Reader · Change the reading level on the articleCars help us go places. Some cars use steam. Some cars use power from the air. Now many cars use gas. Cars make our lives easy. Do you like to ride in a car?
Early Reader · Change the reading level on the articleA battery makes power. It helps our tools work. It can run a phone. It can run a car. We use them every day. Do you use a battery?
Early Reader · Change the reading level on the articleA bike has two wheels. You sit on it to move. You can push with your feet. It helps us go fast. It is a fun way to travel. Do you like to ride a bike?
Early Reader · Change the reading level on the articleA camera takes a picture. It uses light to see. Long ago, people used dark rooms. They used these rooms to draw. Now, we use small cameras. You can take photos too! Do you like taking pictures?
Early Reader · Change the reading level on the articleLong ago, people made guns. They started in China. They used tubes on sticks. These tubes used fire to shoot. Now, guns look very different. They help us learn about history. Do you like old things?
Early Reader · Change the reading level on the articleEngines help things move. Some engines use small fires to work. They can power boats and cars. This helps us go far. They make our world fast. Do you like fast cars?
Early Reader · Change the reading level on the articleThe internet helps us talk to others. It connects computers all over the world. We use it to share things. It helps us learn new things. It is very cool! Do you use the internet?
Early Reader · Change the reading level on the articleSome engines use air to fly. They make a lot of power. This helps big planes go fast. It is how we travel far. It is very cool! Do you like to fly?
Early Reader · Change the reading level on the articleThe telephone helps us talk. It lets us hear friends. Long ago, people used cans and strings. Now, we use wires and air. It is fun to talk to people! Can you say hello?
Early Reader · Change the reading level on the articleA telescope helps us see far away. It makes tiny things look big. People first made them a long time ago. Now we use them to see stars. They help us learn about space. Do you like to look at the stars?
Early Reader · Change the reading level on the articleA tiny part helps things work. It can turn power on or off. It helps radios play sound. It is in many tools we use. This part is very small. Do you use one today?
Early Reader · Change the reading level on the articleA web browser is a tool. It helps us see things online. It shows us pictures and words. You can use it to learn. It is very helpful for us. Do you like to look at things online?
Early Reader · Change the reading level on the articleThe Web helps us find things. It uses computers to share news. One man made it a long time ago. Now, we can use it every day. It helps us learn new things. Do you use the Web?
Early Reader · Change the reading level on the articlePeople have always wanted to know the time. Long ago, they looked at the sun. They used shadows to tell time. Some used water to make clocks. Now we use phones. How do you tell time?
Early Reader · Change the reading level on the articleYou can play games on a TV. These machines are called consoles. Some are small enough to hold. You can play them anywhere. They make us feel happy. Do you like to play games?
Early Reader · Change the reading level on the articleHitachi is a big company. It makes many things. They make fast trains. They also make tools for doctors. These things help people every day. Do you use things from Hitachi?
Early Reader · Change the reading level on the articleH. L. Hunt was a rich man. He found a lot of oil. He used the oil to make money. This helped him buy many things. He had a very big family. Do you know what oil is used for?
Early Reader · Change the reading level on the articleA hoist lifts heavy things. It uses a wheel and a rope. It can move things up or down. This helps us move big loads. An elevator is a kind of hoist. Can you think of something heavy to lift?
Early Reader · Change the reading level on the articleA hole punch makes holes. It works on paper. You push a handle down. This cuts a small hole. It helps you keep papers in a folder. Do you like to make holes?
Early Reader · Change the reading level on the articleSome bullets have a hole in the tip. This hole helps the bullet change shape. It grows wide like a mushroom. This helps it stop fast. It does not go too far. Do you see the hole?
Early Reader · Change the reading level on the articleA home computer is a small machine. You can use it at home. You can play fun games. You can even write words. It can help you learn new things. Do you like to play games on a computer?
Early Reader · Change the reading level on the articleHome Depot is a big store. It sells tools for your house. It also has things to fix things. Many people work there. It helps us fix our homes. Do you like to build things?
Early Reader · Change the reading level on the articleYou can save power at home. Sun power goes into big batteries. This helps when the lights go out. It keeps your house warm and bright. It is a smart way to use sun power. Do you like using the sun?
Early Reader · Change the reading level on the articleA home page is a main web page. It is the first page you see. It helps you find things on a site. It can show you top news. It is a very important page. Do you have a favorite site?
Early Reader · Change the reading level on the articleHonda makes many things. They make cars and bikes. They also make tools for gardens. They even make robots! They help us move around. Do you like cars?
Early Reader · Change the reading level on the articleHoneywell is a very big company. It makes tools for planes. It also makes tools for buildings. Some of their tools help keep homes warm. They have many workers all over the world. Do you like planes?
Early Reader · Change the reading level on the articleThis is a big airport. It is on a new island. Many planes land here every day. It helps people fly all over the world. It is very busy! Do you like to fly in planes?
Early Reader · Change the reading level on the article