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 63 of 86
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A long time ago, people started a book. It tells us about science. It is very old. It helps us learn new things. We can read it to see what people find. Do you like to learn new things?
Early Reader · Change the reading level on the articleSome people try to trick you. They send fake notes to steal things. They might use a fake text. They might use a fake call. This can happen on your phone. Be very careful with links. Do you know what to look for?
Early Reader · Change the reading level on the articleA plug helps sound move. It goes into a hole. This lets you hear music. It works for your headphones. It works for a mic too. Do you use one?
Early Reader · Change the reading level on the articleA record player plays music. It spins a black disc. A tiny needle moves in a groove. This makes sound for you to hear. It is fun to listen! Do you like music?
Early Reader · Change the reading level on the articleA record is a flat disc. It holds music inside it. A small needle plays the music. This helps us hear songs. It is fun to listen! Do you like music?
Early Reader · Change the reading level on the articleSome parts can feel light. They turn light into power. This helps us use tools. It can even make food from the sun. It is very cool! Can you see light?
Early Reader · Change the reading level on the articleWe can make 3D shapes from photos. It uses many pictures of one thing. These pictures help us see the shape. It can even make maps. It helps us see things in movies. Do you like looking at 3D shapes?
Early Reader · Change the reading level on the articleLong ago, people used glass to take pictures. These glass plates held the light. They helped us see stars and space. They even helped doctors see inside us. They were very special tools. Do you like looking at old…
Early Reader · Change the reading level on the articleThis tool sees tiny bits of light. It can see in the dark. It makes light look much bigger. This helps us see far away stars. It is very helpful. Can you imagine seeing in the dark?
Early Reader · Change the reading level on the articleSome tubes can see light. They catch light to work. Light hits the tube. Then it makes a tiny spark. This helps machines see. It is very cool! Can you see the light?
Early Reader · Change the reading level on the articlePHP is a way to make websites. It helps computers show things on the web. It can make pages change for you. This makes the internet fun to use. We use it every day. Do you like looking at websites?
Early Reader · Change the reading level on the articleA pick is a tool for digging. It has a long handle. The top part is made of metal. You can use it to break hard ground. It helps people work in the dirt. It is a very useful tool. Do you like to dig in the dirt?
Early Reader · Change the reading level on the articleA pickup is a big truck. It has a place to carry things. This part is in the back. It has low walls. People use it for work. Now, people use it for fun. Do you like big trucks?
Early Reader · Change the reading level on the articlePierre Omidyar made a big website. It is called eBay. People use it to buy things. He also helps people by giving money. He wants to make the world good. Do you like to shop online?
Early Reader · Change the reading level on the articlePiers Morgan is a man on TV. He tells many stories. He used to write for papers. Now he talks to people on a screen. He works hard every day. Do you like to watch TV?
Early Reader · Change the reading level on the articleBirds can carry notes. Some birds fly home. They can carry a small message. People use them to talk. This helps when wires are broken. It is a clever way to send news. Do you like birds?
Early Reader · Change the reading level on the articlePeople make iron in a hot furnace. It looks like many small blocks. These blocks help us make steel. We use steel for many things. It is very useful. Do you like things made of steel?
Early Reader · Change the reading level on the articleA pike is a very long spear. It has a wood pole. It has a sharp tip. It helps soldiers stay safe. It keeps enemies far away. Do you think it is hard to carry?
Early Reader · Change the reading level on the articlePeople use maps to find their way. They look for things like hills or lights. This helps ships and planes stay on track. It keeps everyone safe on the water. It is a smart way to travel. Can you find your way home?
Early Reader · Change the reading level on the articlePine tar comes from pine wood. People use heat to make it. It helps keep wood safe. It can help a player hold a bat. It is very useful! Do you like trees?
Early Reader · Change the reading level on the articlePinterest is a place for ideas. You can find many things. You can find food or clothes. You can save them to your own lists. It helps you find new things to do. Do you like to find new ideas?
Early Reader · Change the reading level on the articleA lock keeps things safe. It uses small pins. These pins stop the lock from turning. A special key moves the pins. Then the lock can turn. It helps keep your home safe. Do you have a lock on your door?
Early Reader · Change the reading level on the articleA pipette is a tool for liquids. It moves small drops of water. It can move very tiny amounts. This helps people work in labs. It is a very helpful tool. Do you like to use droppers?
Early Reader · Change the reading level on the articleA pistol is a small gun. You hold it in one hand. Some guns shoot one time. Then you must load them again. Other guns can shoot many times. It is a very old tool. Do you know how they work?
Early Reader · Change the reading level on the articleA piston moves up and down. It stays inside a tube. It helps make engines work. It can move air or liquid too. This helps cars go fast. Do you like cars?
Early Reader · Change the reading level on the articleSome engines use a spinning part. This part turns to make power. It does not move up and down. This helps the engine stay small. It can also stop shaking. Can you imagine a spinning engine?
Early Reader · Change the reading level on the articleA pitchfork is a tool. It has a long handle. It has thin metal prongs. You use it to move hay. It helps on a farm. Do you want to try it?
Early Reader · Change the reading level on the articlePictures are made of tiny dots. These dots make a whole image. Many dots make a clear picture. Too few dots can look fuzzy. We use them on screens and paper. Do you like clear pictures?
Early Reader · Change the reading level on the articlePlain text is just words. It does not have colors. It does not have big pictures. It is easy for computers to read. You can use it to write notes. It helps us talk to computers. Do you like to write?
Early Reader · Change the reading level on the articleA plane table is a special tool. It is a flat, strong table. People use it to draw maps. It helps them see where things are. It can sit on bumpy ground. Do you like making maps?
Early Reader · Change the reading level on the articleA planter is a big farm tool. It pulls behind a tractor. It puts seeds in straight lines. This helps plants grow well. It makes farming easy for us. Do you like to plant seeds?
Early Reader · Change the reading level on the articleSome TVs use a special gas. This gas glows when it gets power. It makes a bright picture. These TVs were very big. Now we use different kinds of TVs. Do you like watching TV?
Early Reader · Change the reading level on the articlePlaster is a soft paste. It goes on walls. It makes them smooth. It can also make art. It gets hard with water. It even helps fix broken bones! Do you like smooth walls?
Early Reader · Change the reading level on the articleA plastic bag is a thin pouch. We use them to carry food. They can also hold many things. They help us move stuff from the store. But they can stay in the world for a long time. Do you use bags at home?
Early Reader · Change the reading level on the articleA plastic bottle holds things like water. It can hold milk or juice too. These bottles are light and easy to carry. They do not break like glass. We use them every day. Do you have a bottle near you?
Early Reader · Change the reading level on the articleSome things can be shaped by hand. This stuff is soft like clay. You can press it into shapes. It is used to break big things. It helps people do hard work. Do you like to play with clay?
Early Reader · Change the reading level on the articlePlastic wrap is a thin sheet. It sticks to bowls. It keeps our food fresh. This helps us not waste food. It is very useful. Do you use it at home?
Early Reader · Change the reading level on the articleWe can coat things in metal. This makes things look pretty. It can make things strong too. It helps metal stay safe. It can even make jewelry shine. Do you like shiny things?
Early Reader · Change the reading level on the articleThe PlayStation 2 is a game machine. It plays many fun games. It can also play movies. It is a very famous machine. Many people love to use it. Do you like to play games?
Early Reader · Change the reading level on the articleThe PlayStation 3 is a game box. It plays fun games on your TV. It uses shiny discs to work. You can play with friends online too. It is very cool. Do you like to play games?
Early Reader · Change the reading level on the articleThe PS4 is a game box. It plays fun games. You can play with friends. You use a controller to play. It is very cool. Do you like games?
Early Reader · Change the reading level on the articleThe PS5 is a game machine. It plays many fun games. You can play them on a TV. It helps games load fast. This means less waiting for you. It is very cool! Do you like games?
Early Reader · Change the reading level on the articleThe PlayStation is a game machine. It plays many fun games. You use a disc to play. It makes cool pictures on your TV. Many people love to play it. Do you like video games?
Early Reader · Change the reading level on the articleThe PSP is a small game machine. You can play it in your hands. It plays games and movies too. It helps you have fun anywhere. It is very fun to use. Do you like to play games?
Early Reader · Change the reading level on the articlePliers are a handy tool. They help you hold small things. They can also bend metal. They make your hands much stronger. It is fun to build things. Can you find some tools?
Early Reader · Change the reading level on the articleThis is a place for science stories. It shares new ideas with everyone. Anyone can read the stories for free. It helps us learn about our world. It is very big. Do you like to learn new things?
Early Reader · Change the reading level on the articleSome computer parts are easy to use. You just plug them in. The computer finds them on its own. You do not have to do hard work. This helps you use your computer. Do you like easy tools?
Early Reader · Change the reading level on the articleSome computer programs can grow. You can add new parts to them. These parts help the program do more. It is like adding a new tool to a kit. This makes the program work better for you. Do you like to add things to…
Early Reader · Change the reading level on the article