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 32 of 86
Some tools lock digital things. They act like a lock. This keeps music and movies safe. It helps people follow rules. It can be hard to use sometimes. Do you use a computer?
Early Reader · Change the reading level on the articleComputers use special signals to work. These signals move bits of data. They can be high or low. This helps machines talk to each other. It makes our gadgets work well. Can you find a computer?
Early Reader · Change the reading level on the articleA tiny chip helps tools work. It helps with sound and pictures. It works very fast. It helps your phone run well. This chip is very smart. Do you use a phone?
Early Reader · Change the reading level on the articleA digital signature is a secret mark. It stays on your computer files. It shows who sent a message. It helps keep your data safe. It is like a real name on paper. Do you use computers to talk?
Early Reader · Change the reading level on the articleThis is a special camera. It takes pictures with light. A tiny mirror helps you see. The mirror moves to take the shot. It saves your picture in a digital way. It is a fun tool for us. Do you like taking photos?
Early Reader · Change the reading level on the articleNew TVs use digital signals. They show very clear pictures. The colors look bright and real. This helps you see more. It is like a big window. Do you like watching TV?
Early Reader · Change the reading level on the articleSome places use a special way to watch TV. This way works on big TVs. It also works on small tools you carry. It helps you see many shows. It is very clear. Do you like to watch TV?
Early Reader · Change the reading level on the articleMachines use special tools to help us. These tools turn computer code into sound. They help your music play through speakers. They also help your TV show pictures. This tool makes things work for you. Can you hear…
Early Reader · Change the reading level on the articleDigital video is moving pictures. It uses tiny bits of data. These bits make many pictures. The pictures move very fast. This lets you watch movies. It is easy to share. Do you like to watch videos?
Early Reader · Change the reading level on the articleA DVR saves TV shows. It keeps shows on a disk. You can watch them later. This helps you see your favorite shows. It is very helpful. Do you like watching TV?
Early Reader · Change the reading level on the articleA cord helps your screen work. It sends pictures to your monitor. This cord makes the picture look good. It helps you see your games. It is a very helpful tool. Do you have a screen at home?
Early Reader · Change the reading level on the articleSome parts help power move. This part helps electricity flow one way. It turns power into a smooth stream. This helps your toys work well. It can even fix a battery put in wrong. Can you find this in a tool?
Early Reader · Change the reading level on the articleComputers use special tools to draw. These tools make 3D pictures. They help make video games look real. This helps your games run fast. It is like magic for your screen! Do you like playing games?
Early Reader · Change the reading level on the articleSome wells do not go straight down. They can go sideways too. This helps reach oil under a lake. It also helps reach oil under a town. This way, we do not hurt the land. Can you imagine a hole that turns?
Early Reader · Change the reading level on the articleRadio waves help us find things. We can find a radio in the dark. This helps ships and planes stay safe. It can even help find lost people. It is a very smart tool. Do you want to find a signal?
Early Reader · Change the reading level on the articleA computer has many files. You can put them in folders. These folders help you stay neat. It is like a desk with drawers. Folders keep your things in one place. This makes finding things easy. Do you use folders?
Early Reader · Change the reading level on the articleMen use heat to make new things. They mix silicon with air and metal. This makes stuff used in many tools. It helps make things we use every day. It is very neat! Can you find something made with this?
Early Reader · Change the reading level on the articlePeople sell things to each other. They do not use a big store. They can sell at a home. They can sell on the web, too. This helps people get new things. It is a fun way to work. Do you like to sell things?
Early Reader · Change the reading level on the articleDirectX helps computers play games. It helps with sounds and pictures. It makes video games look good. It also makes them fun to play. This helps you enjoy your games. Do you like playing games on a computer?
Early Reader · Change the reading level on the articleA dirt road is made of the ground. It is not made of stone or brick. It can be sandy or rocky. The road gets very muddy when it rains. This makes it hard to drive on. It is fun to see! Do you like to play in the dirt?
Early Reader · Change the reading level on the articleSome bombs use special materials. These materials can be unsafe. They spread over a place. This can make people feel scared. It also makes cleaning up hard. People must work for a long time. Do you think it is…
Early Reader · Change the reading level on the articleA disc brake helps a car stop. It uses pads to squeeze a round disc. This makes the wheel slow down. It can even make it stop. This keeps us safe on the road. Do you see brakes on a bike?
Early Reader · Change the reading level on the articleDiscord is a way to talk. You can use it to chat. You can also talk with your voice. It helps friends stay close. It is a fun place to be. Do you like to chat with friends?
Early Reader · Change the reading level on the articleDiscovery is a TV channel. It shows us the world. You can see animals and science. It helps us learn new things. It is fun to watch. Do you like to learn?
Early Reader · Change the reading level on the articleThis is a special lock. It uses round discs inside. A key turns the discs. This lets the lock open. It works well outside in the rain. It helps keep things safe. Do you have a lock like this?
Early Reader · Change the reading level on the articleA computer disk can be split. It makes many small parts. Each part works on its own. This helps keep your files safe. It is like a cake with slices. Do you like to keep things neat?
Early Reader · Change the reading level on the articleDisney Channel is a TV station. It shows fun shows. Many kids like to watch it. It has movies too. It is for you and your family. Do you like to watch TV?
Early Reader · Change the reading level on the articleA display shows us things. It can show pictures. It can show numbers. Some screens show words too. We use them every day. Do you like to watch screens?
Early Reader · Change the reading level on the articleA cord connects your computer to a screen. It sends pictures and sound. It can even send other things too. This helps you see your games. It makes things look great. Do you use a big screen?
Early Reader · Change the reading level on the articleSome things are made for one use. You use them and then throw them away. This can be a plastic fork or a paper cup. Many people try to use things more than once. Do you use things many times?
Early Reader · Change the reading level on the articleA distaff is a tool for making thread. It holds soft fluff in one place. This keeps the fluff from getting messy. It helps people spin thread easily. It is a very helpful tool. Do you want to try spinning?
Early Reader · Change the reading level on the articleMany computers work as one team. They talk to each other to finish a big job. If one computer breaks, the team keeps going. This helps us do a lot of work. It is like a group of friends helping you. Do you like…
Early Reader · Change the reading level on the articleBig plants make power for everyone. Small tools can make power too. They can sit on your roof. This helps keep our air clean. It is good for our world. Do you use sun power?
Early Reader · Change the reading level on the articleA box holds the power for your home. It sends power to your lights and tools. It also keeps you safe from harm. The box can turn power off. It is very helpful. Do you have one in your house?
Early Reader · Change the reading level on the articleThings move to you. They go from a maker to a store. Some things go to many stores. Some go to just one. This helps you find what you need. Can you find a snack at a store?
Early Reader · Change the reading level on the articleYou can solve big jobs by breaking them up. Break a big job into small jobs. Do the small jobs one by one. Then put the answers back together. This helps you finish fast. Can you find small jobs to do?
Early Reader · Change the reading level on the articleA diving bell is a big metal room. It goes deep in the water. It holds air inside for people. This helps people work under the sea. It is like a heavy cup. Can you imagine being in one?
Early Reader · Change the reading level on the articleDJI makes flying machines. These machines fly in the sky. They have cameras to take pictures. They help people see from high up. It is fun to watch them fly. Do you like to fly?
Early Reader · Change the reading level on the articleComputers use files to save work. These files hold your words. Some files save books and pictures too. They help you share what you write. It is a smart way to work. Do you use a computer? We can save many things on…
Early Reader · Change the reading level on the articleA domain name is a special name. It helps us find things on the web. It is easier to remember than numbers. You can use it to visit a website. It helps us talk to each other. Do you have a favorite website?
Early Reader · Change the reading level on the articleDonald Douglas made many planes. He built big planes for people. He also made planes for the army. His planes helped many people fly. He loved to work with planes. Do you like to fly in planes?
Early Reader · Change the reading level on the articleDoordarshan is a TV station in India. It shows many shows on a screen. People watch news and sports on it. It helps people learn new things. It is very big. Do you like to watch TV?
Early Reader · Change the reading level on the articleThis is a long path for boats. It goes through Germany. It helps move things like coal. Big ships use it to travel. It is a very long way. Can you see the water? Do you like boats?
Early Reader · Change the reading level on the articleA DOS is a way to talk to a computer. It helps the machine do work. It tells the computer what to do. This helps us use our tools. It is a very smart way to work. Do you like computers?
Early Reader · Change the reading level on the articleA printer makes words on paper. It uses tiny pins to hit a ribbon. The ribbon has ink on it. This makes little dots. The dots make letters. It can even make many copies at once. Do you like to draw with dots?
Early Reader · Change the reading level on the articlePrinters use tiny dots to make pictures. These dots are very small. Many dots make a clear image. A lot of dots help you see detail. It makes the picture look smooth. Do you like looking at pictures?
Early Reader · Change the reading level on the articleA double-decker bus has two floors. It can carry many people. Some buses have no roof on top. You can see the city from high up. It is a fun way to ride. Do you like big buses?
Early Reader · Change the reading level on the articleThe DC-3 is a big plane. It has two spinning engines. It can carry many people. It helps us fly far away. This plane was very special. Do you like to fly?
Early Reader · Change the reading level on the article