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.
Your body makes new parts every day. Some old parts must go away. This helps your body stay healthy. It even helps your fingers grow. It is like leaves falling from a tree. Do you feel strong today?
Early Reader · Change the reading level on the articleThe Appaloosa is a special horse. It has many colorful spots. Some have stripes on their feet. These horses are very pretty to see. Do you like spotted horses too?
Early Reader · Change the reading level on the articleYour belly can sometimes hurt. A small part inside can get swollen. It can feel very sore. This might make you feel sick. A doctor can help you feel better. Have you ever had a tummy ache?
Early Reader · Change the reading level on the articleThe appendix is a tiny tube. It lives in your belly. It looks like a little finger. It helps keep good germs safe. This helps your body stay well. Do you have an appendix too?
Early Reader · Change the reading level on the articleYour body wants to eat. This is called appetite. It helps you get energy. You might feel hungry for food. It can even happen when you see tasty treats. Do you feel hungry now?
Early Reader · Change the reading level on the articleSome animals live in the water. They stay in lakes or seas. Some use gills to breathe. Others breathe air like us. Water is a home for them. It is a big, wet world. Do you like to swim?
Early Reader · Change the reading level on the articleMany living things live in water. They live in lakes or the sea. Some live in slow water. Some live in fast rivers. These places help fish and plants grow. Water is a home for them. Do you like to swim in water?
Early Reader · Change the reading level on the articleMany things swim in the water. Fish move by wiggling their bodies. Some animals use fins to push. Even tiny bugs can swim! It helps them find food. How do you swim in a pool?
Early Reader · Change the reading level on the articleSome plants live in water. They grow in lakes and rivers. They make the air we breathe. Fish use them for homes. They can be big or small. Do you like water plants?
Early Reader · Change the reading level on the articleTiny living things live in hot water. They live in big oceans. They also live in hot pools. They can even make water. These tiny things help the world. They are very strong. Do you like warm water?
Early Reader · Change the reading level on the articleThe white oryx is a large animal. It lives in the dry desert. It has long, straight horns. This animal is very pretty. It is good to protect them. Do you like white animals?
Early Reader · Change the reading level on the articleSome people feel very scared of spiders. They may feel bad near a web. They might cry or sweat. Even a toy spider can scare them. This fear can be hard to stop. Do you feel scared of spiders?
Early Reader · Change the reading level on the articleThis fish lived long ago. It lived in Australia. Its body had hard plates. These plates were like armor. It ate tiny bits in the water. Can you imagine a fish with armor?
Early Reader · Change the reading level on the articleThis is a special tree. It has very sharp leaves. These leaves stay on for a long time. The tree grows in a cold place. It can live for a very long time. Do you like big trees?
Early Reader · Change the reading level on the articleSome trees are very, very tall. They stay green all year. They make big cones. These cones can fall from high up. They are very old trees. Can you find a tall tree?
Early Reader · Change the reading level on the articleSome animals live in trees. They move from branch to branch. They use claws or sticky feet to stay safe. This helps them find food. It is fun to watch them climb. Do you like to climb trees?
Early Reader · Change the reading level on the articleAn arboretum is a place for trees. It has many kinds of trees and shrubs. Some trees have names on them. We can go there to see them. It is like a museum for plants. Do you like to look at trees?
Early Reader · Change the reading level on the articlePeople help trees grow well. They plant them in parks. They also fix sick trees. This keeps our world green. Trees give us shade and air. Do you like big trees?
Early Reader · Change the reading level on the articleScientists look at old things. They find tiny bits in bones. These bits tell us about long ago. They help us learn about plants and animals. It is like a puzzle! Can you find a bone?
Early Reader · Change the reading level on the articleThese small bugs have long tails. They live in damp spots. They like to hide under rocks. They can jump into the air! They have been around for a very long time. Can you find a damp place to look for them?
Early Reader · Change the reading level on the articleThis was a very old tree. It lived a long time ago. It had a big woody trunk. The leaves looked like ferns. These trees grew near rivers. They helped the earth change. Do you like big trees?
Early Reader · Change the reading level on the articleSome living things make their own food. This group has green plants. It also has red algae. They use light to grow. This helps our world stay green. Can you find a green plant?
Early Reader · Change the reading level on the articleA giant turtle lived in the sea. It was very big. It had a soft skin shell. The turtle used strong flippers to swim. It ate food from the sea floor. It is gone now. Do you think it was fast?
Early Reader · Change the reading level on the articleThe archerfish is a cool fish. It lives in the water. It shoots water at bugs. This helps it find food. It is a very good aim. Can you aim like a fish?
Early Reader · Change the reading level on the articleThis is a giant millipede. It has many legs. It lives in the forest. It eats old leaves. This helps the ground stay healthy. It is a big bug! Do you like bugs?
Early Reader · Change the reading level on the articleSome animals are part of one big group. Birds and crocs are in this group. Many big dinosaurs lived long ago. This group helps us learn about life. It is very cool to see them. Do you like birds or crocs?
Early Reader · Change the reading level on the articleSome reptiles are close kin. They lived a long time ago. This group has many kinds. Some are like birds. Some are like crocodiles. They are very cool to see. Do you like dinosaurs?
Early Reader · Change the reading level on the articleThe Arctic fox lives in the cold. It has thick, warm fur. This fur helps it hide in the snow. It eats small animals to stay strong. It is a very smart fox. Do you like the snow?
Early Reader · Change the reading level on the articleThe Arctic tern is a small bird. It flies a very long way each year. It travels from the north to the south. This helps the bird see two summers. It eats small fish for food. Can you imagine flying that far?
Early Reader · Change the reading level on the articleLong ago, big bears lived here. They were very large bears. They lived in North America. These bears are gone now. We find their old bones. Can you find a bear bone?
Early Reader · Change the reading level on the articleWe found old bones of a girl. Her name is Ardi. She lived a long time ago. Ardi could walk on the ground. She could also climb trees. She helps us learn about our past. Do you want to see her bones?
Early Reader · Change the reading level on the articleLong ago, a small creature lived. It lived in a hot place. This creature could walk on the ground. It could also climb in trees. It ate fruit for food. It was a very special part of our past. Can you imagine meeting it?
Early Reader · Change the reading level on the articleWe found old bones in the ground. They are very, very old. These bones belong to a long-lost family. They lived in forests a long time ago. This helps us learn about our past. Do you like to find old things?
Early Reader · Change the reading level on the articleA long time ago, a new friend lived on Earth. This friend was like us. It could walk on two legs. It could also climb in trees. It lived in the woods. It ate many kinds of food. Do you like to climb trees?
Early Reader · Change the reading level on the articleThis is a tall palm tree. It grows in warm places. It has seeds called nuts. Some people chew these nuts. People also use the leaves for plates. It is a very useful tree. Have you seen a palm tree?
Early Reader · Change the reading level on the articleThese are plants with big leaves. They include the palm trees. You might see them in warm places. They are very special plants. We like to look at them. Do you like palm trees?
Early Reader · Change the reading level on the articleA lugworm lives in the sand. It digs a home shaped like a U. The worm stays in its hole for a long time. It eats sand to find food. It is a busy little worm! Do you like looking at the beach?
Early Reader · Change the reading level on the articleThis was a giant bird. It lived a long time ago. It was very heavy. It was the heaviest bird to fly. It lived in a place called Argentina. Can you imagine a bird that big?
Early Reader · Change the reading level on the articleThese ants are very small. They are brown in color. They live in many places. These ants can live in your home. They like to find food. Do you see any ants?
Early Reader · Change the reading level on the articleA giant dinosaur lived long ago. It was very, very big. It lived in a place called Argentina. This lizard was huge! It is one of the biggest land animals ever. Can you imagine being that big?
Early Reader · Change the reading level on the articleOur bodies need special food parts. These parts help us grow. They help our bodies heal. You can find them in meat and eggs. They are also in nuts and beans. Do you like eating these foods?
Early Reader · Change the reading level on the articleThe argonaut is a sea animal. It is a type of octopus. The mother makes a thin shell. She uses it to keep her eggs safe. It also helps her float. Do you like the ocean?
Early Reader · Change the reading level on the articleSome tiny bugs live on fish. They use hooks or suckers to stay on. They eat things from the fish. This can make the fish sick. We must look after our fish. Do you like looking at fish?
Early Reader · Change the reading level on the articleThis is a type of grass. It grows in warm, dry places. Each part has three little bristles. These look like tiny needles. This grass helps the land. Do you like to look at grass?
Early Reader · Change the reading level on the articleA small brown scorpion lives in the desert. It likes to hide under rocks. It stays out at night. It can glow under a special light. Be careful of its sting. Have you seen a scorpion?
Early Reader · Change the reading level on the articleThis was a big reptile. It lived a long time ago. It had a large sail on its back. This sail was very tall. It lived in a place called Arizona. Can you imagine seeing it?
Early Reader · Change the reading level on the articleArmen loved plants. He looked at many flowers. He learned how they grow. His work helps us know plants. He was a great teacher. Do you like to look at flowers?
Early Reader · Change the reading level on the articleArmy ants are very busy ants. They do not have one home. Instead, they move all the time. They travel in big groups to find food. This helps the whole group eat. Do you like to go on walks?
Early Reader · Change the reading level on the article