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 22 of 86
BHP is a very big company. It finds metals in the ground. It finds things like copper and coal. These things help us build. It is the largest mining company. Do you like to learn about big machines?
Early Reader · Change the reading level on the articleSome streets are made for bikes. Cars go slow on these roads. This helps people stay safe. It is a good way to ride. Do you like to ride your bike?
Early Reader · Change the reading level on the articleBrakes help a bike stop. They can slow you down. They can even stop the wheels. This keeps you safe when you ride. Do you use brakes on your bike?
Early Reader · Change the reading level on the articleBikes have gears to help you ride. Some bikes have many gears. Some bikes have only one. Gears help you go up hills. They also help you go fast. It makes riding fun! Do you like to ride your bike?
Early Reader · Change the reading level on the articleA bike rack helps you park. It holds your bike still. You can use a lock to keep it safe. It can be made of metal. These racks are very handy. Do you like to ride your bike?
Early Reader · Change the reading level on the articleYou can share bikes with others. Many cities have these bikes. They cost a small amount of money. This helps our air stay clean. It is a fun way to move! Do you like to ride bikes?
Early Reader · Change the reading level on the articleA bidet helps you stay clean. It uses water to wash. You can use it after you use the toilet. It can even wash your feet. It helps keep you healthy. Do you like using water to wash?
Early Reader · Change the reading level on the articleThese are special glasses. They help you see far away. They also help you see things close up. This helps people read books. They are very handy. Do you wear glasses?
Early Reader · Change the reading level on the articleComputers hold a lot of facts. This is a huge pile of facts. It grows very fast. It helps us find new things. It can help doctors. It can help us stay safe. Do you like facts?
Early Reader · Change the reading level on the articleA bike lane is for bikes. It stays on the road. It helps you stay safe. It can have lines on the ground. Some lanes have walls to keep cars away. Do you like to ride your bike?
Early Reader · Change the reading level on the articleBild is a big German paper. It has many pictures. It tells stories about famous people. Many people in Europe read it. It can change how people think. Do you like reading news?
Early Reader · Change the reading level on the articleBilibili is a place for videos. You can watch fun shows there. You can see words move on the screen. It is a way to talk to friends. It is very fun to use. Do you like watching videos?
Early Reader · Change the reading level on the articleA billboard is a very big sign. It sits by busy roads. It shows big pictures to people in cars. It helps you find food or gas. It is hard to miss! Have you seen a big sign today?
Early Reader · Change the reading level on the articleBill Hewlett was a smart man. He helped start a big company. He made tools that use power. He also gave much money to help schools. He loved the great outdoors too. Do you like to build things?
Early Reader · Change the reading level on the articleBill Moyers was a man who told news. He worked in the White House. He helped start public TV. This helps us learn new things. He was a very busy man. Do you like to watch the news?
Early Reader · Change the reading level on the articleComputers use many kinds of files. Some files hold words we can read. Other files hold pictures or sounds. These are not just words. They help your computer work. Do you like computer games?
Early Reader · Change the reading level on the articleComputers use math to work. A computer can multiply numbers. It does this with small parts. It adds things up to find the answer. This helps your computer run fast. Do you like math?
Early Reader · Change the reading level on the articlePeople use tiny living things to make things. They can make food and medicine. This helps keep us healthy. It can even help clean our water. It is very cool! Do you want to learn more?
Early Reader · Change the reading level on the articleA biochip is a tiny tool. It works like a small lab. It can test many things at once. This helps doctors find sickness. It is very smart. Do you want to see more?
Early Reader · Change the reading level on the articlePeople use tools to help living things. They can make new parts for the body. They can also help plants and animals. This work helps us live better lives. It is very cool! Do you want to learn more?
Early Reader · Change the reading level on the articleWe can get power from plants. We use wood and old crops. This helps us make heat. It can even help cars go. It is a way to use what we grow. Do you like to use wood for heat?
Early Reader · Change the reading level on the articleComputers can know who you are. They look at your face. They look at your hands. They can even hear your voice. This helps keep things safe. It is like a special key made of you. Do you have a special way to say hello?
Early Reader · Change the reading level on the articlePeople look at nature to learn. They see how birds fly. They see how bugs move. This helps us build new things. We can make better tools. It is like a fun game of pretend. Can you find something in nature to copy?
Early Reader · Change the reading level on the articleTiny living things can find metal. They live in rocks. They help us get gold and copper. This helps keep our Earth clean. It is like magic! Do you like shiny metal?
Early Reader · Change the reading level on the articleA bioreactor is a special tank. It helps tiny living things grow. It keeps them warm and fed. This helps make food or medicine. It is a very cool tool. Do you want to see one?
Early Reader · Change the reading level on the articleA biplane has two wings. One wing sits above the other. This helps the plane stay strong. It can also be very light. These planes were used a long time ago. Do you like planes?
Early Reader · Change the reading level on the articleA man named Bi Sheng made a new tool. He made small pieces of clay. Each piece had a mark on it. He used them to print books. This helps us read many stories. Do you like to read books?
Early Reader · Change the reading level on the articleBitcoin is digital money. It lives on computers. It does not use banks. People use it to pay for things. You can send it to friends. Do you want to learn more?
Early Reader · Change the reading level on the articleComputers can share files together. Many computers work as one team. They send small pieces to each other. This helps big files move fast. It helps everyone on the web. Can you share with friends?
Early Reader · Change the reading level on the articleYou can write on a dark board. It is a big, flat surface. We use white or colored sticks to draw. It helps us learn in school. It is fun to make art! Do you like to draw on boards?
Early Reader · Change the reading level on the articleBlackRock is a very big company. It helps people manage money. They have offices in many places. They work in many countries. This helps many people. Can you find them on a map?
Early Reader · Change the reading level on the articleA blacksmith works with metal. They use fire to make it soft. Then they hit it with a hammer. They can make tools or gates. This helps us build things. Do you like making things?
Early Reader · Change the reading level on the articleA blade is a sharp part. It can cut or chop. It is made of hard things. We use them to cook food. They help us do many jobs. Do you use a blade at home?
Early Reader · Change the reading level on the articleA blast furnace makes metal. It is a very big, hot oven. It melts rocks to find iron. We use this iron for cars and ships. It helps us build many things. Do you like metal toys?
Early Reader · Change the reading level on the articleA blender helps us make food. It has fast blades inside. The blades spin and crush things. It can make a cold drink. It can even crush ice! Do you like smoothies?
Early Reader · Change the reading level on the articleA blimp is a big balloon. It flies in the sky. It uses light gas to float. It can carry people or signs. It is fun to see! Have you seen one?
Early Reader · Change the reading level on the articleA block and tackle helps you lift. It uses wheels and a rope. This makes heavy things feel light. It is used on big boats. It is used on cranes too. Can you lift something heavy with it?
Early Reader · Change the reading level on the articleComputers can share a big list. This list keeps track of things. It links new parts to old parts. It is like a long chain. This helps keep the list safe. It is hard to change the list. Do you like using computers?
Early Reader · Change the reading level on the articleA blog is a site on the web. It is like an online diary. You can write about many things. People can read what you write. You can even see pictures. Do you like to write stories?
Early Reader · Change the reading level on the articleYou can write online. It is a place for stories. You can share them with friends. It helps us all talk. It is fun to use. Do you like to write?
Early Reader · Change the reading level on the articleThis is a magazine. It tells news about money. It came out a long time ago. It helps people learn about work. It is still around today. Do you like to read news?
Early Reader · Change the reading level on the articleBloomberg News tells stories about money. It is a big news group. They work in many places. You can see their news on TV. It helps people know what is happening. Do you like to hear the news?
Early Reader · Change the reading level on the articleA blowgun is a long tube. You put a small dart inside. Then you blow air through the tube. The air pushes the dart out fast. People use them to hunt. It is a fun tool. Can you blow air hard?
Early Reader · Change the reading level on the articleA blowtorch makes a hot flame. It can melt ice or snow. People use it to cook food too. It helps fix roads and metal. It is a very useful tool. Do you want to see a flame?
Early Reader · Change the reading level on the articleA blueprint is a special drawing. It shows how to build things. Long ago, these were blue with white lines. Now, we use computers to make plans. They help us build big roads. Do you like to draw plans?
Early Reader · Change the reading level on the articleA Blu-ray is a shiny disc. It holds many movies. It can also hold video games. This helps you see things very clearly. It uses a blue light to work. Do you like watching movies?
Early Reader · Change the reading level on the articleBNP Paribas is a big bank. It is in France. It helps many people with money. It is very large. Many people work there. Do you use a bank?
Early Reader · Change the reading level on the articleBob Guccione made many magazines. He was a photographer too. He also made movies. He was a very rich man. He lived in a big house. Do you like looking at art?
Early Reader · Change the reading level on the article