Hand washing
We wash our hands with soap. This cleans off tiny germs. It keeps us from getting sick. It helps us stay healthy. Soap and water work well. Do you wash your hands?
Early Reader · Change the reading level on the articleLife Science articles — Page 65
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 65 of 116
Explore related Science Lab activities about plants, animals and ecosystems or the human body, each at five reading levels.
Hans Asperger
Hans Asperger was a doctor. He studied how children grow. He wrote many books. He lived a long time ago. Some people talk about his work today. Do you want to learn more?
Early Reader · Change the reading level on the articleHans Eysenck
Hans Eysenck was a man who studied people. He wanted to know why we act in certain ways. He wrote many books about this. Some people did not agree with his ideas. He worked very hard to learn. Do you wonder why…
Early Reader · Change the reading level on the articleHans Hass
Hans Hass loved the sea. He went deep under the water. He took many photos of fish. He made films to show us the sea. He helped us learn about sharks. Do you like to swim?
Early Reader · Change the reading level on the articleHaplogroup
We all have tiny parts inside us. These parts come from our moms and dads. They tell a story of where we came from. It is like a big family tree. Can you find your family tree?
Early Reader · Change the reading level on the articleHarald zur Hausen
Harald was a smart man. He studied tiny germs. He found out how they make people sick. This helps us stay well. His work was very big. It won him a great prize. Do you like science?
Early Reader · Change the reading level on the articleHarbor seal
The harbor seal lives in the sea. It can be brown or grey. It has a thick layer of fat to stay warm. Mothers care for their small pups. These seals are very cool! Do you like seals?
Early Reader · Change the reading level on the articleHarbour porpoise
The harbour porpoise is a small sea animal. It lives near the coast. It likes to swim in cold water. It eats many small fish. This helps it grow big and strong. Do you like to see animals in the sea?
Early Reader · Change the reading level on the articleHardiness (plants)
Some plants can live in the cold. They stay healthy in the snow. Other plants need lots of heat. They might die in the ice. This helps us know what to grow. Do you like plants in the snow?
Early Reader · Change the reading level on the articleHardy–Weinberg principle
Living things pass traits to babies. These traits stay the same in a big group. This helps us see how life changes. It is like a rule for nature. Do you like to learn about animals?
Early Reader · Change the reading level on the articleHarold Gillies
Harold was a kind doctor. He helped fix faces. He worked with skin to help men. This made them feel better. He was a great helper. Do you like helping people?
Early Reader · Change the reading level on the articleHarry Benjamin
Harry Benjamin was a kind doctor. He helped many people feel happy. He worked with people who felt like a different gender. He was very nice to them. Many people liked him. Do you know a kind doctor?
Early Reader · Change the reading level on the articleHarry Stack Sullivan
Harry was a doctor. He helped people feel better. He studied how friends act. He thought being kind helps. He wanted people to be happy. Do you like to help friends?
Early Reader · Change the reading level on the articleHarvester ant
Some ants like to find seeds. They carry them to their home. They keep the seeds in a room. This helps new plants grow. It is very hard work! Do you like to find treats?
Early Reader · Change the reading level on the articleHarvey Cushing
Harvey Cushing was a doctor. He helped fix brains. He was very good at his work. He made tools to help people. He helped many sick people feel better. Do you want to be a doctor?
Early Reader · Change the reading level on the articleHatzegopteryx
A big flying creature lived long ago. It had a very large head. It lived on a small island. This creature was a strong hunter. It could fly in the sky. Do you think it was scary?
Early Reader · Change the reading level on the articleHawaiian honeycreeper
Small birds live in Hawaii. These birds have many shapes. Some have long bills. Some have short bills. They use them to find food. They are very special. Do you like birds?
Early Reader · Change the reading level on the articleHawksbill sea turtle
This is a sea turtle. It lives in warm water. It has a hard shell. It has a beak like a bird. This turtle eats sea sponges. We must help keep them safe. Do you like turtles?
Early Reader · Change the reading level on the articleHazel
Hazels are small trees or bushes. They grow tasty nuts. We can eat these nuts. Animals like squirrels love them too. They are very special plants. Do you like eating nuts?
Early Reader · Change the reading level on the articleHeadache
Your head can feel sore. It might feel tight. It might feel like a thump. This is called a headache. It can happen to many people. Does your head ever hurt?
Early Reader · Change the reading level on the articleHead lice infestation
Tiny bugs can live in hair. They crawl on your head. They can make your skin itch. It is not because you are dirty. It can happen to anyone. Do you want to know more?
Early Reader · Change the reading level on the articleHead louse
Small bugs live in our hair. They stay on your head. They eat tiny bits of blood. They cannot fly or jump. They use claws to hold on. They move from hair to hair. Have you seen one?
Early Reader · Change the reading level on the articleHealth education
People teach us how to stay well. They show us how to be strong. We learn how to eat good food. It helps us live a happy life. We can learn to be healthy too. Do you want to be healthy?
Early Reader · Change the reading level on the articleHealth facility
Some places help us stay well. They can be big or small. You can go to a doctor there. They help you feel better. It is good to be healthy. Do you know a place like this?
Early Reader · Change the reading level on the articleHealth professional
Health workers help us stay well. They give us advice. They help us feel better. They work in many places. Some work in homes. They help people and pets too. Do you want to help people?
Early Reader · Change the reading level on the articleHealthy diet
Eating good food helps us stay well. We can eat fruits and plants. Beans and grains are good too. It helps our bodies grow. We should eat less sugar. Do you like to eat fruit?
Early Reader · Change the reading level on the articleHearing aid
Some people need help to hear. A small tool can make sounds louder. It sits in or behind your ear. This helps you hear your friends talk. It is a very smart tool. Do you want to hear more?
Early Reader · Change the reading level on the articleHeartburn
You may feel a burn in your chest. It can happen after you eat. Some foods make it worse. Lying down can also make it feel bad. It is okay to ask for help. Have you ever felt a sour taste?
Early Reader · Change the reading level on the articleHeart failure
Your heart is a pump. It moves blood through you. Sometimes the pump works slow. It may not move enough blood. This can make you feel tired. Does your heart feel strong?
Early Reader · Change the reading level on the articleHeart rate
Your heart beats all day. It pumps blood to you. It goes fast when you run. It goes slow when you sleep. This helps your body stay well. Can you feel your heart beat?
Early Reader · Change the reading level on the articleHeart sounds
Your heart makes sounds. It goes lub-dub, lub-dub. These sounds come from tiny doors inside. The doors snap shut to move blood. This helps you stay well. Can you feel your heart beat?
Early Reader · Change the reading level on the articleHeart transplantation
Doctors can give a new heart. They take a heart from a donor. This helps a sick person live longer. It is a way to stay well. Do you think it is amazing?
Early Reader · Change the reading level on the articleHeart valve
Your heart has tiny doors. These doors help blood move. They only open one way. This keeps your blood moving right. It helps you stay well. Can you feel your heart beat?
Early Reader · Change the reading level on the articleHeath
A heath is a place with small plants. It grows in dry, sandy soil. Many birds and bugs live there. It is a special home for them. We must help keep it safe. Do you like to look at plants?
Early Reader · Change the reading level on the articleHeat illness
Hot weather can make us feel sick. It can make your skin feel dry. It might make your head feel dizzy. We should drink lots of water. We can also wear loose clothes. Do you like to stay cool?
Early Reader · Change the reading level on the articleHeat stroke
Being in the heat can make you sick. Your body can get too hot. This can make you feel dizzy. It is important to drink water. You should stay in the shade too. Can you stay cool today?
Early Reader · Change the reading level on the articleHector's dolphin
This is a small dolphin. It lives in the sea. It has a round fin on its back. It is grey, white, and black. We can see them in New Zealand. Do you like dolphins?
Early Reader · Change the reading level on the articleHeinz Guderian
Heinz was a leader in a big war. He used many tanks. He helped make a plan for them. The tanks moved very fast. This was a hard time for many people. Do you like big machines?
Early Reader · Change the reading level on the articleHeinz Kohut
Heinz was a doctor for the mind. He helped people feel better. He listened to how people felt. He wanted to help them understand themselves. This work helped many people. Do you like to talk about your feelings?
Early Reader · Change the reading level on the articleHe Jiankui
A man named He worked with tiny parts of life. He tried to change how babies grow. This was not the right way to do it. Many people were upset. He had to go to jail. Do you think science should have rules?
Early Reader · Change the reading level on the articleHelicase
Tiny things work inside you. They help unpack your body's plans. They pull two strands apart. This helps you grow and stay well. It is like a tiny motor! Can you imagine tiny motors in your cells?
Early Reader · Change the reading level on the articleHelicidae
These are land snails. They live on the ground. Some have bright shells. Some shells are round. We can see them in gardens. Do you like snails?
Early Reader · Change the reading level on the articleHelicobacter pylori
Tiny bugs live in many stomachs. They are shaped like a spiral. Most people feel fine with them. Some bugs can make your tummy hurt. They can even make sores. Do you have a tummy ache?
Early Reader · Change the reading level on the articleHelicoprion
A long time ago, a strange fish lived. It looked like a big shark. It had teeth in a spiral shape. These teeth helped it catch food. This fish is very cool to see. Do you like old fossils?
Early Reader · Change the reading level on the articleHelix pomatia
This is a big land snail. It has a brown shell. It lives in forests and woods. Some people even eat them! They can live for a long time. Do you like snails?
Early Reader · Change the reading level on the articleHelminthiasis
Some tiny worms can live in bodies. They may live in your tummy. They can take food from you. This can make you feel sick. It can make it hard to learn. We must stay clean to stay well. Have you washed your hands today?
Early Reader · Change the reading level on the articleHematophagy
Some animals eat blood. They get food this way. Small bugs and even some birds do this. It helps them grow. It is a special way to eat. Have you ever seen a bug bite?
Early Reader · Change the reading level on the articleHematopoietic stem cell
Special cells make your blood. They live inside your bones. These cells make many new parts for your blood. This helps you stay well. Do you know where your bones are?
Early Reader · Change the reading level on the article