Read about living things, from cells and plants to animals and the human body. Choose an article below; its reading controls let you move between the available levels.
Tests can check how we think. These tests give us a score. The score helps us learn. It can help us in school. It helps us find jobs. We all think in our own way. Do you like to solve puzzles?
Early Reader · Change the reading level on the articleSome people are very sick. They go to a special place in a hospital. Many helpers work there. Doctors and nurses help them get well. They use tools to help people breathe. This helps them stay safe. Can you imagine…
Early Reader · Change the reading level on the articleSome people get very sick. They go to a special room in the hospital. Doctors and nurses help them there. They use machines to help them breathe. This room helps people get better. Do you know a hospital?
Early Reader · Change the reading level on the articleLong ago, people lived in different ways. Some groups met and had families. This helped us stay strong. We are all part of one big story. Do you like learning about the past?
Early Reader · Change the reading level on the articleSometimes blood leaks inside the body. You cannot see it on your skin. This can make you feel very weak. It is important to see a doctor fast. Doctors can help you get well. Have you ever had a scrape?
Early Reader · Change the reading level on the articleSome doctors help grown-ups stay well. They look at how your body works. They find out why you feel sick. They help you feel better. This is very important work. Do you want to be a doctor?
Early Reader · Change the reading level on the articleDoctors use a special list. It helps them name sicknesses. This list uses codes. It helps people all over the world. It makes it easy to share news about health. Can you imagine a giant list of every sickness?
Early Reader · Change the reading level on the articleA group helps our world. They look at plants and animals. They find ways to keep them safe. This helps all living things. It is good for you and me. Do you love nature?
Early Reader · Change the reading level on the articleWe like some people more than others. We may like people who look like us. We may like people who are kind. This helps us make new friends. It helps us stay close to them. Do you like to make new friends?
Early Reader · Change the reading level on the articleSmall pads sit in your back. They stay between your bones. These pads act like soft cushions. They help you move and jump. They keep your bones safe. Do you feel your back?
Early Reader · Change the reading level on the articleLiving things change over a long time. Small changes happen in babies. Some changes help them live well. These changes stay in the family. This is how we get many kinds of life. Do you see many kinds of plants?
Early Reader · Change the reading level on the articleYou look a lot like your parents. You get this from tiny parts inside you. These parts tell your body how to grow. They can decide your hair color. They even help decide if you are tall. Do you look like your mom or dad?
Early Reader · Change the reading level on the articleA virus is very, very small. It can live inside other living things. It makes many copies of itself. This can make you feel sick. We can use soap to help. Do you want to learn more?
Early Reader · Change the reading level on the articleInside your body, genes tell cells what to do. Some parts of a gene are not used. These parts are lost. They are like extra pieces in a toy set. The good parts stay to help you grow. Can you find things that help you…
Early Reader · Change the reading level on the articleMany plants are called morning glories. They grow in warm places. Some climb up trees. They have pretty flowers. The flowers can be blue, red, or pink. Some even grow in sand. Do you like bright flowers?
Early Reader · Change the reading level on the articleThis is a green plant. It grows in water. It can grow in wet dirt, too. People eat it for food. It is very tasty. Do you like green food?
Early Reader · Change the reading level on the articleA man studied how we act. He looked at people and animals. He wanted to see how they talk. His work helps us learn. He was a very smart man. Do you like to watch animals?
Early Reader · Change the reading level on the articleThe iris is part of your eye. It has many pretty colors. It makes the dark circle in your eye change size. This helps you see in the light. It is very cool! Do you know your eye color?
Early Reader · Change the reading level on the articleThe giant deer lived long ago. It was very big. It had huge horns on its head. These horns were very wide. These deer are gone now. We can see their bones. Do you like big deer?
Early Reader · Change the reading level on the articleYour tummy can feel bad sometimes. It might hurt or feel full. It can make you go to the bathroom a lot. This can happen for a long time. Doctors can help you feel better. Do you ever have a tummy ache?
Early Reader · Change the reading level on the articleIsabel was a writer. She made a way to learn about people. She worked with her mother. This helps us know how we act. It is very interesting. Do you like to learn about people?
Early Reader · Change the reading level on the articleQuillworts are small plants. They live in clear water. They look like little quills. They help the water stay healthy. We can find them in ponds. Do you like to look at plants?
Early Reader · Change the reading level on the articleDoctors use a special gas. It helps you sleep during surgery. You breathe it in through a mask. It helps your body stay still. It makes the work safe. It is very helpful. Can you imagine sleeping like that?
Early Reader · Change the reading level on the articleOur bodies need a tiny part to stay strong. It helps make proteins. We get it from food like eggs and fish. Our bodies cannot make it alone. You must eat it every day. Can you name a food you like?
Early Reader · Change the reading level on the articleSome small bugs live in water. They also live on land. Many have hard shells. Some can roll into a ball. They help clean up dead leaves. They are very cool! Can you find one?
Early Reader · Change the reading level on the articleAn itch is a funny feeling. It makes you want to scratch. It might feel like a bug on you. Scratching helps the feeling go away. It can happen on your skin. Do you ever feel an itch?
Early Reader · Change the reading level on the articleIvan was a man who loved animals. He went to many far places. He even had a zoo. He looked for strange animals too. Do you like animals? We can learn about them together.
Early Reader · Change the reading level on the articleIxora is a pretty plant. It grows in warm places. It has many small flowers. The flowers grow in big groups. They can bloom all year. These plants make nice hedges. Do you like bright flowers?
Early Reader · Change the reading level on the articleThe jacamar is a pretty bird. It lives in warm woods. It has a long beak. This bird eats many bugs. It looks very bright. Do you like bright birds?
Early Reader · Change the reading level on the articleThe jacana is a special bird. It lives near warm water. It has very long toes. These toes help it walk on plants. It can find food in the water. Can you see its long toes?
Early Reader · Change the reading level on the articleJack LaLanne loved to move. He helped people stay strong. He taught them to eat good food. This helped many people feel well. He even had a show on TV. Do you like to exercise too?
Early Reader · Change the reading level on the articleThis is a green lizard. It has three small horns. Some males have these horns. They live in wet forests. They like to eat bugs. Can you see its green skin? It is a cool animal!
Early Reader · Change the reading level on the articleThis was a giant sea bug. It lived in the water. It had big claws to catch food. It was very large. It is the biggest bug ever found! Can you imagine a bug that big?
Early Reader · Change the reading level on the articleJagadish Chandra Bose was a smart man. He loved to study nature. He found out that plants can feel things. He also studied waves in the air. His work helps us learn today. Do you like to study plants?
Early Reader · Change the reading level on the articleThis is a book for doctors. It tells them about health. It has been around a long time. It helps doctors learn new things. It helps people stay well. Do you want to be a doctor?
Early Reader · Change the reading level on the articleJames Bond loved birds. He studied many kinds of birds. He lived in the United States. He wrote a big book about birds. He even shared a name with a spy! Do you like to watch birds?
Early Reader · Change the reading level on the articleJames Braid was a doctor. He helped many people. He helped fix feet and eyes. He also found a new way to help people sleep. This helped them feel better. Do you want to learn more?
Early Reader · Change the reading level on the articleJames Lind was a doctor. He worked on big ships. He found that fruit helps sick sailors. Eating lemons and oranges is good for you. It helps keep people well. Do you like eating fruit?
Early Reader · Change the reading level on the articleThis is a green snake. It lives high in the trees. The snake is long and thin. It can be hard to see. It is a very strong snake. It has a special bite. Do you like snakes?
Early Reader · Change the reading level on the articleJames Kent was a doctor. He wrote a big book. It helped people learn about health. Many people still use it today. Do you like to read books?
Early Reader · Change the reading level on the articleJan was a great scientist. He studied how our bodies work. He looked at eyes and hearts. He even looked at tiny parts of cells. His work helps us learn today. Do you like to learn new things?
Early Reader · Change the reading level on the articleJan was a man who loved bugs. He used a tool to see them. He saw how tiny eggs grow. He saw how bugs change. He found out many things. It is fun to look closely. Do you like bugs too?
Early Reader · Change the reading level on the articleTiny bugs can make us sick. Mosquitoes carry a germ. They can pass it to people. It can make your head hurt. A shot can help keep you safe. Do you like to stay safe?
Early Reader · Change the reading level on the articleThis is a very big salamander. It lives in cool rivers. It has brown and black skin. This skin helps it hide. It stays in the water all its life. Do you like big animals?
Early Reader · Change the reading level on the articleSnow monkeys live in Japan. They have brown hair. Their faces are pink. They can live in the cold snow. They like to swim in warm water. Do you like to swim too?
Early Reader · Change the reading level on the articleThis beetle has a big horn. The boys use it to fight. They try to flip each other. They also live in green forests. It is fun to see them! Have you seen a beetle?
Early Reader · Change the reading level on the articleThis is a very big crab. It lives in the deep sea. It has very long legs. The crab is orange with white spots. It can hide on the ocean floor. It is a gentle crab. Do you want to see it?
Early Reader · Change the reading level on the articleThis plant has sweet flowers. The flowers smell very good. They are white and small. People use them for tea. They also make perfume. They can be used in hair. Do you like sweet smells?
Early Reader · Change the reading level on the article