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.
Chang Yŏngsil was a smart maker. He made tools to tell time. He made a clock that used water. He also made a clock for the sun. His tools helped many people. Can you find a clock near you?
Early Reader · Change the reading level on the articleThis is a TV station. It is in a place called Russia. It shows many shows. Some shows are for kids. People watch it on their screens. Do you like to watch TV?
Early Reader · Change the reading level on the articleA charging station gives power to cars. It works like a big plug for a car. This helps the car get food to go. You can find them at shops or homes. They help us drive clean cars. Do you like electric cars?
Early Reader · Change the reading level on the articleThis is a big stone bridge. It goes over a river. It has many pretty statues on it. People walk on it to see the city. It is very old and strong. Do you like old bridges?
Early Reader · Change the reading level on the articleCharles Crocker built big trains. He helped make long tracks. These tracks went across the land. They helped people travel far. He worked very hard. Do you like trains?
Early Reader · Change the reading level on the articleThis is a big airport. It is in France. Many planes land here. People fly to far places. It helps us travel. Do you like to fly?
Early Reader · Change the reading level on the articleCharles Kettering was a great inventor. He made many new things. He helped make cars easier to start. He also helped make new kinds of paint. His work helps us today. Do you like to build things?
Early Reader · Change the reading level on the articleCharles Taylor helped a big newspaper. It was called the Boston Globe. He made the news fair for all. He added sports and news for women. This helped many people read it. Do you like to read the news?
Early Reader · Change the reading level on the articleCharles Tiffany made beautiful things. He sold pretty rings and silver. He also made a blue box. People love his work. His shop was very famous. Do you like shiny things?
Early Reader · Change the reading level on the articleCharles Pratt was a busy man. He made oil for lamps. This oil helped people see at night. He also helped people learn at a big school. He was very kind. Do you like to learn new things?
Early Reader · Change the reading level on the articleCharles Revson made nail paint. He started a big company. He helped many people. He gave money to schools and hospitals. This helps us stay well. Do you like bright colors?
Early Reader · Change the reading level on the articleCharles Rolls loved fast machines. He helped make famous cars. He also liked to fly in the sky. He even flew in a big balloon. He was a brave pilot. Do you like fast cars or planes?
Early Reader · Change the reading level on the articleCharles Saatchi loves art. He helps people see art. He built a big place for art. Many people go there to look. It is a special gift. Do you like to look at art?
Early Reader · Change the reading level on the articleCharles Simonyi builds computer programs. He helped make tools for your computer. He even flew to space! He went to space two times. It looked like a big stage. Do you want to visit space?
Early Reader · Change the reading level on the articleCharlie Rose was a man on TV. He talked to many people. He spoke to leaders and stars. He asked them many questions. He did this for a long time. Do you like to ask questions?
Early Reader · Change the reading level on the articleA computer can talk to you. It can use text or your voice. Some bots act like real people. They help us find things online. They can even be in toys. Do you want to talk to one?
Early Reader · Change the reading level on the articleChatGPT is a smart computer tool. It can talk to you. It can write stories and songs. It can even make pictures. It helps many people do work. Do you want to try it?
Early Reader · Change the reading level on the articleSome people make new things. They turn raw stuff into food. They also make soap and medicine. This work helps us every day. It is very cool! Do you like to make things?
Early Reader · Change the reading level on the articlePeople study how things change. They use special tools to make things. These tools help make new stuff. This helps us every day. It is very cool to learn. Do you like to see how things work?
Early Reader · Change the reading level on the articleA reactor is a special box. It helps things change. It can make food or gas. We use them to make things we need. It is a very busy place! Do you want to see one?
Early Reader · Change the reading level on the articleThe C&O Canal was a long path for water. It moved coal in boats. Mules pulled the boats along a path. This helped people get things they need. It was a very big job. Do you like riding in boats?
Early Reader · Change the reading level on the articleA big road goes over the water. It uses bridges and tunnels. Some parts go under the sea. This helps cars move fast. It is a very long way. Have you ever been in a tunnel?
Early Reader · Change the reading level on the articleChet Huntley told the news. He spoke on the TV. He was very well known. Many people liked to watch him. He was a kind man. Do you like to watch the news?
Early Reader · Change the reading level on the articleChevrolet makes cars. They make many kinds of cars. Some are small. Some are big trucks. They help us go places. Do you like cars?
Early Reader · Change the reading level on the articleChevron is a big company. It finds oil and gas. It makes fuel for cars. This helps us go places. It works in many lands. Do you see their signs?
Early Reader · Change the reading level on the articleThis is a big water path. It moves water in a new way. It helps keep our drinking water clean. It also lets big ships pass. This helps people move things. Can you see the big water?
Early Reader · Change the reading level on the articleBuses and trains move people in Chicago. They run all day and all night. You can ride them to go places. They help us get around the city. Do you like to ride the train?
Early Reader · Change the reading level on the articleThis is a big paper. It tells news from Chicago. It has been around a long time. Many people read it every day. It helps us know what is happening. Do you like to read the news?
Early Reader · Change the reading level on the articleChieko Asakawa is a smart scientist. She helps people who cannot see. She made tools for computers. These tools can read words out loud. This helps many people use the web. Her work is very good. Do you like computers?
Early Reader · Change the reading level on the articleCHIN has many names. It can be a radio station. It can be on the web too. These things are in Canada. They help show local culture. It is fun to learn about them. Can you find them?
Early Reader · Change the reading level on the articleThis is a big TV station. It is in China. It shows news and shows. Many people watch it. It helps people see things. Do you like to watch TV?
Early Reader · Change the reading level on the articleThis is a big company in China. It makes computers and tools. They also make parts for planes. This work helps many people. It is a very large group. Do you like computers?
Early Reader · Change the reading level on the articleChina Mobile is a big company. It helps people talk on phones. It works in many places. It helps people use the internet too. This helps us stay close to friends. Do you use a phone to talk?
Early Reader · Change the reading level on the articleA big company works in China. It finds oil and gas. This helps people get energy. It works in many far places. They even drill deep in the sand. Do you know where gas comes from?
Early Reader · Change the reading level on the articleTrains run all over China. They carry many people. They also carry heavy things. Some trains go very fast. They help us travel far. Do you like train rides?
Early Reader · Change the reading level on the articleFast trains run in China. They go very, very fast. They help people travel to far cities. These trains are very big. Many people ride them every day. Do you like fast trains?
Early Reader · Change the reading level on the articleLong ago, people built a big train track. It ran through a place called Manchuria. This track helped trains go a shorter way. It helped people move things and travel. It was a very big job! Do you like train rides?
Early Reader · Change the reading level on the articleTrains move people in a big city. They go over high bridges. Some trains go deep under the ground. They even go high up in the air! These trains help us get around. It is a big way to travel. Do you like riding trains?
Early Reader · Change the reading level on the articleA chopper is a cool bike. It looks very long. People change the parts to make it look special. Some have tall handles. They can be many bright colors. Do you like fast bikes?
Early Reader · Change the reading level on the articleChristiane Amanpour tells the news. She travels to many places. She talks to leaders of the world. Her work helps us know what is happening. She is a brave reporter. Do you like to watch the news?
Early Reader · Change the reading level on the articleA Chromebook is a type of computer. It helps you go on the web. You can use it at school. It is very fast to start. It is easy to use. Do you like computers?
Early Reader · Change the reading level on the articleChrysler makes cars. They make many kinds. They make big trucks too. Some cars are for families. It is a very big company. Do you like cars?
Early Reader · Change the reading level on the articleChung Mong-koo is a man from Korea. He helps run a big car company. He works very hard every day. He is one of the richest men there. He helps many people. Do you like cars?
Early Reader · Change the reading level on the articleCisco is a big tech company. They make tools to help computers talk. These tools help us use the web. They help keep our data safe too. This work helps many people. Do you like using computers?
Early Reader · Change the reading level on the articleA cistern holds water. It can catch rain. It keeps the water safe. This helps us have water to use. It is very helpful! Do you use water from a cistern?
Early Reader · Change the reading level on the articleCitgo is a big oil company. It helps move fuel for cars. You might see its bright sign. It has many stations in the US. It is a very busy business. Do you see a Citgo sign?
Early Reader · Change the reading level on the articleCitibank is a big bank. It helps people with money. It has many offices. Some are in many countries. This helps people all over. It is a very old bank. Do you use a bank?
Early Reader · Change the reading level on the articleCitroën is a car company. It started in France. A man named André Citroën began it. He made many kinds of cars. These cars help people go places. Do you like cars?
Early Reader · Change the reading level on the article