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.
5,533 public articles · Page 73 of 116
Explore related Science Lab activities about plants, animals and ecosystems or the human body, each at five reading levels.
This is a red cedar tree. It stays green all year. It can live for a very long time. Birds love to eat its blue berries. These berries help new trees grow. Do you like looking at trees?
Early Reader · Change the reading level on the articleThis is a lime tree. It has bumpy green fruit. The leaves smell very good. People use them in food. It helps make tasty meals. Do you like lime?
Early Reader · Change the reading level on the articleThe kākāpō is a big bird. It lives in New Zealand. It is a parrot that cannot fly. It stays on the ground. It likes to come out at night. It has green feathers. Do you like birds?
Early Reader · Change the reading level on the articleThe kangaroo rat is a small animal. It lives in dry, sandy places. It can hop like a big kangaroo. It uses its cheeks to carry food. This helps it stay safe and full. Do you like to hop too?
Early Reader · Change the reading level on the articleA long time ago, a big crocodile lived. It had very long teeth. These teeth looked like tusks. It might have lived in the water. It was a very cool animal. Can you imagine a crocodile with tusks?
Early Reader · Change the reading level on the articleKarl was a great scientist. He loved to study nature. He looked at how babies grow. He also studied frozen ground. His work helps us learn. Do you like to explore?
Early Reader · Change the reading level on the articleKarl Landsteiner was a smart man. He studied blood. He found out that blood is not all the same. This helps doctors give blood to sick people. It keeps them safe. He won a very big prize. Do you like science?
Early Reader · Change the reading level on the articleKarl was a man who loved bees. He watched how they move. He found out that bees dance to talk. They tell their friends where to find food. This helps the whole hive. Can you dance like a bee?
Early Reader · Change the reading level on the articleThis is a big school for doctors. It is in a place called Sweden. People go there to learn about health. They help find ways to fix the body. It is a very special place. Do you want to be a doctor?
Early Reader · Change the reading level on the articleKatalin Karikó is a scientist. She studies how our bodies work. She helped make new medicine. This medicine helps us stay well. Her hard work helps many people. Do you like to learn new things?
Early Reader · Change the reading level on the articleKatharine was a writer. She studied how people act. She worked with her daughter. They made a test. This test helps people know themselves. It is very helpful. Do you like to learn about people?
Early Reader · Change the reading level on the articleKazimierz was a man who studied minds. He helped people understand their feelings. He thought hard times could help us grow. This makes us better people. He was very kind. Do you want to learn more?
Early Reader · Change the reading level on the articleA big bird lived long ago. It was a giant bird. It had a very large head. It could run very fast. This bird was a hunter. Can you imagine a bird that big?
Early Reader · Change the reading level on the articleKelp forests live under the sea. They look like big green woods. Many fish like to hide there. It is a busy home for sea life. Do you want to see them?
Early Reader · Change the reading level on the articleKenneth and Mamie were a team. They helped many children. They studied how kids feel. Their work helped make things fair. They wanted all kids to be happy. Do you want to help people too?
Early Reader · Change the reading level on the articleThe Kentrosaurus was a dinosaur. It lived long ago. It had many sharp spikes. These spikes were on its back and tail. It used them to stay safe. Do you like dinosaurs?
Early Reader · Change the reading level on the articleA long time ago, a new kind of ape lived. They had a very flat face. Their teeth were small, too. They lived near a big lake. They lived in trees and grass. Do you want to see their bones?
Early Reader · Change the reading level on the articleStrong stuff makes your body tough. It is in your hair. It is in your nails. It is in bird feathers. It helps keep your skin safe. It is very strong. Can you find your nails?
Early Reader · Change the reading level on the articleYour eye has a clear part on front. Sometimes this part gets sore. It can feel red and itchy. It might hurt to see light. Doctors help make it feel better. Do you keep your eyes clean?
Early Reader · Change the reading level on the articleThe key lime is a small fruit. It grows on a tree. The fruit is very sour. People use it to make tasty pie. Do you like sour food?
Early Reader · Change the reading level on the articleSome animals help their homes. They keep many plants and animals safe. If they leave, the home changes. One animal can help a whole land. We must help them too. Do you see animals in your yard?
Early Reader · Change the reading level on the articleThe kiang is a big wild ass. It lives on high, grassy hills. It has a brown coat. Some parts of its body are white. It eats grass and plants. It is a very cool animal. Do you like big animals?
Early Reader · Change the reading level on the articleThe kidney bean looks like a kidney. Some are red and some are white. They help our bodies grow strong. You can eat them in a soup. We must boil them to make them safe. Do you like beans?
Early Reader · Change the reading level on the articleSome people need help cleaning their blood. Machines can do this work for them. The machine takes out bad things. It also takes out extra water. This helps people stay well. Can you imagine a machine helping your body?
Early Reader · Change the reading level on the articleYour kidneys help clean your blood. They take out waste. Sometimes they stop working well. This can make you feel tired. Doctors can help you stay well. Do you know where your kidneys are?
Early Reader · Change the reading level on the articleTiny hard bits can grow in your body. They form in your kidneys. This happens if you do not drink enough water. These bits can hurt a lot. Drinking water helps you stay well. Do you drink enough water each day?
Early Reader · Change the reading level on the articleA new kidney helps a person. It can come from a friend. It can come from someone who died. This helps the person stay healthy. It helps them live a long time. Do you want to learn more?
Early Reader · Change the reading level on the articleKillifish are small fish. They live in many places. Some live in rivers. Some live in lakes. Their eggs can stay dry for a bit. This helps them live in tiny ponds. Do you like fish?
Early Reader · Change the reading level on the articleKim Peek had a very special brain. He could remember almost every book he read. He could read very fast. This helped him know many things. He was a very smart man. Do you like to read books?
Early Reader · Change the reading level on the articleThis is a small spider. It lives in Japan. It makes a hole in the ground. It hides its home with a flap. The flap looks like a leaf. It helps the spider stay safe. Can you find its home?
Early Reader · Change the reading level on the articleThe Kinder is a type of goat. It comes from a farm in Washington. These goats are strong and small. They give us milk for cheese. They are very special goats. Do you like goats?
Early Reader · Change the reading level on the articleSome tiny things live in water. They have a little tail. This tail helps them move. Some can make people sick. But others just eat tiny bugs. They are very small! Can you find them in a drop of water?
Early Reader · Change the reading level on the articleThe king cobra is a very long snake. It lives in warm places in Asia. This snake likes to eat other snakes. It can make a low sound like a growl. The mother snake builds a nest for her eggs. Do you like snakes?
Early Reader · Change the reading level on the articleKing crabs live in the deep sea. They like very cold water. They have ten legs to help them move. Some people catch them for food. They are big and strong. Do you like crabs?
Early Reader · Change the reading level on the articleKingfishers are bright birds. They live in many places. Some live near water. Some live in trees. They eat fish and bugs. They are very pretty to see. Do you like bright colors?
Early Reader · Change the reading level on the articleThe king quail is a tiny bird. It lives on the ground. It makes a sweet whistling sound. These birds are very small. They are fun to watch. Do you like small birds?
Early Reader · Change the reading level on the articleA kingsnake is a cool snake. It can be many colors. Some have bright rings. They eat other snakes for food. They can swim and climb too. Do you like snakes?
Early Reader · Change the reading level on the articleThe kinkajou lives in big trees. It likes to eat sweet fruit. It uses a long tongue to lick. Its tail works like a fifth hand. It sleeps while you are awake. Can you find one in the trees?
Early Reader · Change the reading level on the articleTiny mud dragons live in sand. They are very small. They have many spikes on their bodies. These spikes help them move. They eat food found in the mud. Do you want to find one?
Early Reader · Change the reading level on the articleHe was a great doctor. He studied tiny germs. He found out how they make us sick. His work helps us stay well. He is on a paper note. Do you like to help people?
Early Reader · Change the reading level on the articleA kitten is a baby cat. They live with their mother. They drink her milk to grow. They stay warm in a nest. Kittens like to play with you. Do you like kittens?
Early Reader · Change the reading level on the articleThis crab looks like it has fur. It lives deep in the ocean. It lives near hot water. The hair on its arms helps it find food. It is a very special crab. Do you like animals with hair?
Early Reader · Change the reading level on the articleTiny germs live in the dirt. They can also live in our bodies. Some germs can make us sick. They might hurt our lungs. We can use medicine to help. Do you like to stay healthy?
Early Reader · Change the reading level on the articleSome animals share heat. They huddle close together. This helps them stay warm. It can even help them save food. It is like a big warm hug. Do you like to snuggle?
Early Reader · Change the reading level on the articleYour knee is a big joint. It joins your leg to your thigh. It helps you walk and run. It also helps you jump high. The knee is very important. Can you feel your kneecap?
Early Reader · Change the reading level on the articleYou can kneel on the ground. You can use one knee. You can use both knees. It shows you are being kind. People do this to pray. Do you know how to kneel?
Early Reader · Change the reading level on the articleThe Kodiak bear is a huge bear. It lives on islands in Alaska. These bears are very big. They are even bigger than most brown bears. They eat fish and berries. Do you want to see a big bear?
Early Reader · Change the reading level on the articleThe koel is a large bird. It lives in many far places. It eats fruit and bugs. Some koels lay eggs in other nests. The males are black. The females are brown. Can you hear their loud calls?
Early Reader · Change the reading level on the article