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 73 of 86
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People check computer programs to make sure they work. They look for mistakes called bugs. These bugs can make a program slow. Testing helps make programs better for you. It is a very smart job. Do you like using…
Early Reader · Change the reading level on the articleThe Sognefjord is a huge body of water. It is in a land called Norway. It is the longest and deepest fjord there. It has big, tall cliffs. Many people come to see it. Do you want to see it too?
Early Reader · Change the reading level on the articleSoichiro Honda loved machines. He worked on bikes. He built many fast motors. His work helps us travel. He made a big company. Do you like cars?
Early Reader · Change the reading level on the articleSoil is made of tiny bits of rock. It also has air and water in it. These bits can be big or small. We use soil to build big things like roads. It helps keep our houses safe. Do you like to play in the dirt?
Early Reader · Change the reading level on the articleSome dirt gets dirty. Machines use air to clean it. They pull bad air out of the ground. This helps keep the earth safe. It is a big job. Can you help keep our earth clean?
Early Reader · Change the reading level on the articleSolar panels catch light from the sun. They turn light into power. This power can run your toys. It can even light up a house. It is a clean way to get energy. Do you like the sun?
Early Reader · Change the reading level on the articleSolder is a special metal. It melts when it gets hot. Then it cools down. It joins two metal parts together. It helps fix things like pipes. It also helps make toys work. Do you like to build things?
Early Reader · Change the reading level on the articleAn SSD helps your computer remember things. It keeps your photos and games safe. It has no moving parts inside. This makes it very fast and quiet. It helps your computer turn on quickly. Do you use one in your computer?
Early Reader · Change the reading level on the articleSolomon Guggenheim loved art. He bought many fine paintings. He also worked with metals like gold. He helped build a big museum in New York. You can see his art there today. Do you like to look at art?
Early Reader · Change the reading level on the articleSome tools use loud sound. They make a big noise. This noise can hurt ears. It can make people feel sick. These tools help police. Have you heard a very loud noise?
Early Reader · Change the reading level on the articleSony is a big company from Japan. They make many things. They make games and music. They also make TVs and cameras. You might use their things at home. Do you like playing games?
Early Reader · Change the reading level on the articleSophie was a brave pilot. She flew in a big balloon. She flew high in the sky. She loved to fly at night. It was her job to fly. Do you like to fly?
Early Reader · Change the reading level on the articleComputers can put things in order. They can sort numbers or words. This helps us find things fast. It makes work easy for us. It is like cleaning your room. Do you like to sort your toys?
Early Reader · Change the reading level on the articleA sound card helps a computer make noise. It lets you hear music and games. It also lets you use a microphone. This helps you talk to friends. It makes computer sounds much better. Do you like to listen to music on a…
Early Reader · Change the reading level on the articlePeople write special words for computers. These words tell the computer what to do. The computer reads the words to work. This helps us make games and tools. It is a fun way to build things. Do you want to try…
Early Reader · Change the reading level on the articleThis is a big news paper. It comes from a place called Hong Kong. People read it to learn news. It is very old and famous. It helps us know what is happening. Do you like to read the news?
Early Reader · Change the reading level on the articleSouthwest is a big airline. It flies many planes. These planes fly to many places. It helps people travel far. We can fly in the sky too. Do you like to fly?
Early Reader · Change the reading level on the articleThis tool helps find things in food. It uses heat to work. The tool moves liquid in a circle. It can pull oils from a plant. This helps us learn about things. Do you like to learn about food?
Early Reader · Change the reading level on the articleA space capsule is a small ship. It carries people to space. It can also carry tools. It brings them back home to Earth. It is a very brave little ship. Do you want to go to space?
Early Reader · Change the reading level on the articleComputers need room to work. They use memory to solve problems. Some jobs need a lot of room. Other jobs need very little room. This helps us know what to use. Do you like to use a computer?
Early Reader · Change the reading level on the articlePeople make things for space. They build big rockets. They also build small tools. These tools fly high up. They help us every day. Do you want to go to space?
Early Reader · Change the reading level on the articleA space ship named Columbia flew to space. A piece of foam hit its wing. This happened during the trip up. The ship broke apart on the way home. Seven people were on the ship. We remember them today. Do you like to…
Early Reader · Change the reading level on the articleA space suit helps people in space. It keeps people safe and warm. It also gives them air to breathe. This helps them work far from home. It is like a tiny home you wear. Would you like to wear one?
Early Reader · Change the reading level on the articleSpaceX builds big rockets. They fly them into space. These rockets carry tools and people. This helps us learn about stars. They want to go to Mars one day. Do you want to go to space?
Early Reader · Change the reading level on the articleSpam is unwanted mail. It comes to your screen. People send the same thing many times. It can be a trick. It can be an ad. It can be very annoying. Have you seen it?
Early Reader · Change the reading level on the articleSome clothes can stretch a lot. This material helps clothes fit well. It can grow very long. Then it snaps back to its shape. It helps you move your body. Do you wear stretchy clothes?
Early Reader · Change the reading level on the articleA spear-thrower is a long tool. It helps you throw a spear. It makes the spear go very fast. This helps people hunt for food. It is a very old tool. Do you want to try throwing one?
Early Reader · Change the reading level on the articleComputers can learn to hear us. They listen to our voices. This helps them know our words. It makes our tools very smart. You can talk to a phone. It can hear you! Can you talk to a computer?
Early Reader · Change the reading level on the articleComputers can hear us talk. They turn our words into text. This helps us talk to machines. It can even help us write. It is a very cool tool. Do you like to talk to computers?
Early Reader · Change the reading level on the articleA speedometer shows how fast you go. It is in cars and boats. It tells you your speed. This helps you drive safely. It is a neat tool. Do you like to ride in cars?
Early Reader · Change the reading level on the articleA spindle is a long stick. It helps make yarn. You use it to twist soft wool. It can have a heavy part to help it spin. This makes thread for clothes. Can you spin yarn?
Early Reader · Change the reading level on the articleA spinneret makes long, thin strings. It pushes out thick liquid. This liquid turns into solid thread. It is like making cotton candy. These strings help make things we use. It is a neat way to work. Do you like soft…
Early Reader · Change the reading level on the articleA machine makes long thread. It uses soft fluff. It makes very strong string. This helps make clothes for us. It is a big machine. Do you like your clothes?
Early Reader · Change the reading level on the articleA man made a new tool. It makes thread for cloth. One person can make many threads at once. This helps make clothes for us. It was a big change. Do you like to wear soft cloth?
Early Reader · Change the reading level on the articleA spinning mule is a big machine. It turns fluff into yarn. This yarn makes clothes for you. It moves back and forth. The machine works very fast. Can you see how it spins?
Early Reader · Change the reading level on the articleMachines make long, thin threads. These threads make our clothes. We use them for many things. They can be very strong. It is like making long noodles. Do you like wearing soft clothes?
Early Reader · Change the reading level on the articleA spinning wheel makes thread. It turns soft fluff into string. You use it to make clothes. It helps us make things to wear. Do you like wearing soft clothes?
Early Reader · Change the reading level on the articleA spiral tool sorts things. It uses a shape like a coil. Heavy bits sink to the middle. Light bits stay on the edge. This helps us clean things. It is very neat! Do you like to sort things?
Early Reader · Change the reading level on the articleA spire is a tall point. It sits on top of a building. Some are made of stone. Others are made of wood. They help buildings reach the sky. Do you see tall points near you?
Early Reader · Change the reading level on the articleA level helps us build things. It has a tiny air bubble inside. The bubble moves to the middle. This shows the surface is flat. It helps us make straight walls. Do you like building things?
Early Reader · Change the reading level on the articlePlanes have parts on their wings. These parts can move up. They help the plane slow down. They also help the plane land safely. This helps the wheels stay on the ground. Have you seen a plane land?
Early Reader · Change the reading level on the articleA sport bike is a fast bike. It is made to go very fast. It can turn quickly on roads. These bikes are built for speed. They are fun to ride. Do you like fast things?
Early Reader · Change the reading level on the articleA sports car is a fast car. It is made to go very fast. It can also turn well. These cars are fun to drive. Do you like fast cars?
Early Reader · Change the reading level on the articleSome metal is very special. It can bend and twist. Then it pops back to its shape. It is used in tools and blades. It helps things work well. Can you think of something that bends?
Early Reader · Change the reading level on the articleSome computer programs act like spies. They watch what you do. They take your private facts. This can make your computer slow. It is good to be safe online. Do you use a computer?
Early Reader · Change the reading level on the articleComputers keep lots of facts. We use a special way to talk to them. This helps us find things fast. It is like a smart list. We can ask for what we need. It makes work easy. Do you like lists?
Early Reader · Change the reading level on the articleSome toilets are on the floor. You do not sit on them. You bend your knees to squat. This helps your body work well. Many people use them in big parts of the world. Do you know this kind of toilet?
Early Reader · Change the reading level on the articleComputers use special rules for color. These rules help colors look right. They work on screens and printers. This helps you see pretty pictures. It makes colors look real. Do you like bright colors?
Early Reader · Change the reading level on the article