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 70 of 86
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Trains move many people in a big city. They run on lines with bright colors. Some trains drive themselves! This helps people get to work fast. It is a very clean way to travel. Do you like riding trains?
Early Reader · Change the reading level on the articleSAP is a big company. It makes computer programs. These programs help businesses work. Many big companies use them. They help people do their jobs. Do you like using computers?
Early Reader · Change the reading level on the articleTrains run under the ground in a city. They use rubber wheels to move. These wheels help the trains stay on track. The trains carry many people every day. It is a fast way to travel. Do you like riding trains?
Early Reader · Change the reading level on the articleThe Sapsan is a fast train. It runs on tracks in Russia. It can carry many people. It helps us get to new places fast. We can ride it to see friends. Do you like fast trains?
Early Reader · Change the reading level on the articleSarah Koenig tells true stories. She works on the radio. She makes shows for people to hear. Her work is very famous. People like to listen to her. Do you like to hear stories?
Early Reader · Change the reading level on the articleComputers use special wires to work. These wires help save your files. They connect to parts inside your computer. This helps your computer run fast. It is very helpful for us. Do you have a computer?
Early Reader · Change the reading level on the articleA small tool shows where you are. It talks to machines in space. These machines tell it your place on a map. It helps you find your way. It is very helpful. Do you like to explore?
Early Reader · Change the reading level on the articleSome phones talk to space. They use tools high in the sky. This helps when you are far away. It can help in a big storm. These phones are very helpful. Do you want to talk to space?
Early Reader · Change the reading level on the articleSatoru Iwata made video games. He worked for a big company. He helped make games for everyone. He loved to play games too. He was a very kind leader. Do you like to play games?
Early Reader · Change the reading level on the articleA person made bitcoin. We do not know their name. They used a secret name. They made new digital money. This money is very special. It is a big mystery. Do you like secrets?
Early Reader · Change the reading level on the articleA big company finds oil. It works in Saudi Arabia. It gets oil from under the ground. This oil helps many people. The company is very large. Do you know what oil is used for?
Early Reader · Change the reading level on the articleA sawmill cuts wood. It turns logs into boards. This makes wood for us to use. It helps us build things. We can use wood for many jobs. Do you like to build things?
Early Reader · Change the reading level on the articleFast trains help people travel. They go from small towns to big cities. The trains move very fast. This helps you get around. It is a great way to ride. Do you like trains?
Early Reader · Change the reading level on the articleScala is a way to talk to computers. It helps people write code. It can grow as you use it. This helps people build big things. Do you like to build things?
Early Reader · Change the reading level on the articleA special tool sees tiny things. It uses a beam to look. This beam shows small shapes. It makes things look big. You can see tiny bits of life. It is like a super lens. Do you want to see tiny worlds?
Early Reader · Change the reading level on the articleThis tool sees tiny things. It looks at very small bits. It uses a sharp tip. The tip scans a flat surface. It makes a picture for us. We can see tiny dots. Can you see them too?
Early Reader · Change the reading level on the articleSome roads are very pretty. They go past nice views. You can see trees or water. These roads help people see the world. They are fun to travel on. Do you like to go for a drive?
Early Reader · Change the reading level on the articleComputers have many jobs to do. A helper decides which job goes first. This helps the computer work fast. It makes sure every job gets a turn. This is how a computer does many things at once. Do you like to do many…
Early Reader · Change the reading level on the articleA school bus carries kids to school. It is often bright yellow. This color helps people see it. Long ago, horses pulled small wagons. Now, big buses drive us safely. Do you ride a bus?
Early Reader · Change the reading level on the articleA schooner is a fast boat. It has tall poles with sails. These boats use wind to move. They can carry food or fish. We can see them on the sea. Do you like big boats?
Early Reader · Change the reading level on the articlePeople write stories about science. They tell us how things work. They write in books and on the web. This helps us learn new things. It helps us stay safe. Do you like to learn?
Early Reader · Change the reading level on the articleThis is a big science museum. It is in a city called London. You can see old engines there. You can see rockets too. It is a fun place to visit. Do you like science?
Early Reader · Change the reading level on the articleTools help us learn. Some tools are very small. Some tools are very big. They help us see the world. We use them to study things. Do you like to use tools?
Early Reader · Change the reading level on the articleA scimitar is a curved sword. It has a bend in the blade. People used them on horses. The curve helps them cut well. These swords come from far away. Do you like looking at old things?
Early Reader · Change the reading level on the articleA scooter is a small motor bike. It has a seat for you. You can rest your feet on a flat part. It is easy to ride and park. It helps people get around town. Do you like small bikes?
Early Reader · Change the reading level on the articleA screwdriver is a tool. It helps you turn screws. You hold the handle. You put the tip in the screw. Then you turn it. It helps us fix things. Do you like to fix toys?
Early Reader · Change the reading level on the articleA scrubber cleans dirty air. It washes away bad things. It can use water to help. This helps keep our world clean. We need clean air to live. Do you like fresh air?
Early Reader · Change the reading level on the articleYou can breathe under the water. A diver carries their own air. It is in a tank. This helps you swim and move. It is fun to see fish. Do you want to dive?
Early Reader · Change the reading level on the articleAn SD card holds your things. It keeps your photos safe. It can fit in a camera. It can fit in a phone too. This helps you save your work. It is very small. Do you have one?
Early Reader · Change the reading level on the articleSean Hannity talks on the radio. He also talks on TV. He tells people his ideas. Many people listen to him. He writes books, too. Do you like to listen to stories?
Early Reader · Change the reading level on the articleSean Parker works with computers. He helped make big websites. He helped people share music. He helped people find friends online. He likes to build new things. Do you like computers too?
Early Reader · Change the reading level on the articleA seaplane is a plane that can land on water. It can use a lake or the sea. Some have big floats under them. Others have a body like a boat. These planes help us reach far places. Can you imagine flying over the waves?
Early Reader · Change the reading level on the articleComputers use special ways to find things. They look through lists of data. This helps them find what you need fast. It helps you find things on a screen. It is like a smart helper. Can you find your toy in a big box?
Early Reader · Change the reading level on the articleSears was a big shop. It sold things in books. People could pick items from the books. Then the shop sent them to your home. It was a very large shop. Do you like shopping in big stores?
Early Reader · Change the reading level on the articleA seat is a place to sit. It can have a back or arms. You can find them in cars or on bikes. Some seats are long and soft. They help us rest. Do you have a favorite seat?
Early Reader · Change the reading level on the articleA seat belt keeps you safe. It holds you in your seat. It helps if the car stops fast. This keeps you from hitting things. It is very good for you. Do you wear yours?
Early Reader · Change the reading level on the articleA seawall is a strong wall. It sits by the sea. It stops big waves from hitting land. This keeps our homes safe. It helps us play by the water. Do you like the beach?
Early Reader · Change the reading level on the articleLong ago, TV was black and white. Then, people made a way to see color. This helped many people watch shows. It worked in places like France and Russia. Now, we use new ways to watch TV. Do you like color on your TV?
Early Reader · Change the reading level on the articlePeople work to keep things safe. They build strong walls and locks. They also help keep computers safe. This helps stop bad people. It keeps our things and our data good. Do you like to stay safe?
Early Reader · Change the reading level on the articleSome people study computers. They look for weak spots. They find ways to get in. Some do this to help. Others do it to be bad. It helps us stay safe. Do you like computers?
Early Reader · Change the reading level on the articleYou can hide things to keep them safe. You might hide a key in a tire. This helps keep it from being found. But hiding is not enough to stay safe. You still need a good lock. Can you think of a good hiding spot?
Early Reader · Change the reading level on the articleA small tool helps keep things safe. It can open a locked door. It can also help you use a bank. You use it with a secret word. It keeps your things safe. Do you have a secret key?
Early Reader · Change the reading level on the articleA sedan is a type of car. It has a roof to keep you dry. The engine is in the front. The people sit in the middle. The bags go in the back. It is a handy car. Do you like cars?
Early Reader · Change the reading level on the articleSega makes fun video games. They make games for big machines. They also make games for your home. You might play Sonic the Hedgehog. He is a fast blue hero. Do you like to play games?
Early Reader · Change the reading level on the articleThe Genesis is a video game machine. It plays many fun games. You can play games with Sonic the Hedgehog. It was very popular in many places. It brings games from the arcade to your home. Do you like to play games?
Early Reader · Change the reading level on the articleThe Saturn is a game machine. It plays games on small discs. You can play fun games on it. It was made by a company called Sega. Do you like to play games?
Early Reader · Change the reading level on the articleThere is a long tunnel in Japan. It goes under the sea. It connects two big islands. Trains go through it to help people move. It is very long and deep. Have you ever been in a tunnel?
Early Reader · Change the reading level on the articleA tool feels the ground shake. It works when the Earth moves. This helps us learn about quakes. It can even work on Mars! Do you want to feel a shake?
Early Reader · Change the reading level on the article