Explore the ideas and history behind numbers, shapes, patterns and mathematical thinking. Choose an article below; its reading controls let you move between the available levels.
1,419 public articles · Page 17 of 30
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Height tells us how tall things are. It can show how high a plane flies. It can show how big a person is. We use it to measure the world. It helps us know how much space we have. How tall are you? Can you find…
Early Reader · Change the reading level on the articleImagine you want to visit many cities. You want to find the shortest way home. You can visit each city once. This helps you save time. It also helps you save gas. It is a big puzzle to solve. Can you find the best way?
Early Reader · Change the reading level on the articleHelen loved numbers. She taught many people about them. She worked in many far places. She was a great leader. She helped students learn. Can you count with her? She was a very smart teacher.
Early Reader · Change the reading level on the articleHenri Cartan loved math. He lived in France. He studied numbers and shapes. He taught many students. He helped other math friends too. Do you like math?
Early Reader · Change the reading level on the articleHenri was a man who loved math. He looked at shapes and lines. He found new ways to measure them. His work helps us understand math today. It is very smart work. Do you like math too?
Early Reader · Change the reading level on the articleHenry Briggs loved numbers. He found new ways to use them. He helped make math easier for everyone. He even taught many students. He was a great thinker. Do you like to count things?
Early Reader · Change the reading level on the articleHermann Minkowski loved math. He looked at shapes and numbers. He found new ways to see space and time. His work helps us understand the world. Math is a grand puzzle. Do you like to solve puzzles?
Early Reader · Change the reading level on the articleImagine a shape made of lines. These lines connect dots. You can try to trace a path. The path must touch every dot. But this shape has a trick. You cannot do it! It is a special puzzle. Can you find the dots?
Early Reader · Change the reading level on the articleSometimes we need to solve a puzzle. We might try one thing at a time. This is called trial and error. It helps us find a good way. It is not always perfect. But it is good enough. Can you try to solve a puzzle?
Early Reader · Change the reading level on the articleComputers use a special way to count. They use numbers and letters. This helps them work fast. It makes big tasks easy. We use it to help computers talk. Can you find numbers in a computer?
Early Reader · Change the reading level on the articleA hexagon has six sides. It has six corners too. You can see them in a bee hive. They fit together well. This helps bees build homes. Do you see these shapes in your house?
Early Reader · Change the reading level on the articleWe use math to group things. First, we count one thing. Next, we count groups of things. Then, we count groups of groups. This helps us see big patterns. It is a way to think. Can you find a pattern?
Early Reader · Change the reading level on the articleSome numbers have many parts. You can split them in many ways. These are special numbers. They help us measure things. They are very useful. Do you like to count?
Early Reader · Change the reading level on the articleElectricity moves through wires to your home. Some wires carry power a long way. They use a special kind of flow. This helps save power on the trip. It works well for wind and water power. Do you use electricity…
Early Reader · Change the reading level on the articleWe use shapes to see the world. We use lines and points too. These help us draw and build. A man named David Hilbert wrote rules for them. His rules help us learn about shapes. Can you find a shape near you?
Early Reader · Change the reading level on the articleMath can find patterns in big groups. We can use small sets to build things. This helps us know how much we have. It makes hard puzzles feel easy. Math is a great tool. Can you find a pattern today?
Early Reader · Change the reading level on the articleMath helps us find things. We use math to find where shapes meet. It can show us if a puzzle has an answer. This helps us understand how things work. Math is very cool! Can you find shapes in your room?
Early Reader · Change the reading level on the articleWe use special signs for numbers. These signs help us count. They help us show how much we have. Long ago, people in India made them. Later, people in other lands used them too. They help us every day. Can you find…
Early Reader · Change the reading level on the articleA man named Hippocrates lived long ago. He loved shapes and numbers. He wrote a book about them. This book helped many people learn. He used letters to name shapes. Do you like to study shapes?
Early Reader · Change the reading level on the articleWe can use bars to show things. These bars show many things at once. They help us see a pattern. You can see how many are in a group. It helps us learn. Do you see the shapes?
Early Reader · Change the reading level on the articleMath helps us find a missing number. Long ago, people used words to solve puzzles. They called a missing number a heap. This helps us solve many things. It is like a fun game. Can you find the missing number?
Early Reader · Change the reading level on the articleMath helps us find shapes. It can find the size of a circle. People used math long ago. They used small stones to count. It helps us see how things change. Do you like to count?
Early Reader · Change the reading level on the articleWe can count many ways to do things. You can count how to mix tastes. You can count ways to make sounds. This helps us see patterns. It is like a fun puzzle. Can you find a pattern today?
Early Reader · Change the reading level on the articlePeople use math to study shapes. They measure how long things are. They can find the size of a circle. This helps us build big things. It is a fun way to see the world. Do you like shapes?
Early Reader · Change the reading level on the articleWe use rules to think well. These rules help us find truth. People used them long ago. They help us solve puzzles today. Do you like to solve puzzles?
Early Reader · Change the reading level on the articleLong ago, people used marks to count. They cut lines into wood or stone. Some used clay to write numbers. Later, people used words to solve math. Now, we use small signs. These signs help us work fast. Do you like…
Early Reader · Change the reading level on the articleWe can guess what might happen. It is like tossing a coin. Will it land on heads? We use math to help us. It helps us play fair games. Do you like to play games?
Early Reader · Change the reading level on the articleWe use numbers to learn things. We count many things. We can count people or coins. This helps us know the truth. It is like a big puzzle. Do you like to count?
Early Reader · Change the reading level on the articleMath helps us study shapes. We can look at triangles. People studied them long ago. They used them to build big pyramids. It helps us know where stars are. Do you like to look at shapes?
Early Reader · Change the reading level on the articleMath can help us look at groups. We can use it to see how things fit. It helps us find patterns in numbers. This helps us learn about shapes too. It is a big tool for math. Can you find math in your room?
Early Reader · Change the reading level on the articleSome shapes are the same. You can bend them. You can stretch them. Do not tear them. A square is like a circle. They are the same kind of shape. Can you find a shape that bends?
Early Reader · Change the reading level on the articleThink of lines and dots. You can add a dot to a line. This makes a new shape. The shape is still the same. It just looks a bit different. Do you see the dots?
Early Reader · Change the reading level on the articleMath helps us see how things link. We can look at how one thing goes to another. It is like a path between two spots. This helps us learn about shapes and sets. It is a fun way to think. Can you see the paths around you?
Early Reader · Change the reading level on the articleMath helps us find patterns. Some math rules stay the same. They look and act alike. This helps us solve puzzles. You can use these rules to learn. It is fun to find them! Can you see a pattern?
Early Reader · Change the reading level on the articleMath uses patterns to show how things work. Some groups of numbers stay the same. They follow a rule for every part. This helps us solve big puzzles. It is a neat way to look at things. Can you find a pattern today?
Early Reader · Change the reading level on the articleThings can look different from far away. We use math to see them. It helps us draw what we see. This math shows how shapes change. It makes our drawings look real. Do you like to draw?
Early Reader · Change the reading level on the articleMath can show how things stay the same. We can move things from one group to another. The rules still work the same way. This helps us see patterns. It is like a magic trick for numbers. Do you like patterns?
Early Reader · Change the reading level on the articleMath can be a fast way to solve puzzles. It helps us find answers quickly. We use it to count and group things. It makes hard work easy for computers. It is a smart way to think. Do you like to solve puzzles?
Early Reader · Change the reading level on the articleWe can count ways to pair things up. You can use this to study tiny bits of stuff. It helps us learn about how things are made. It is a fun way to see patterns. Do you like to find patterns?
Early Reader · Change the reading level on the articleYou have many jobs to do. You also have many friends to help. Each friend wants a different amount of pay. How can you pick the best way? You can find the way that costs the least. This helps everyone work well. Can…
Early Reader · Change the reading level on the articleMath can look at shapes. We can find the space inside a curve. This space is like a slice of pie. It helps us name new things. It is a fun way to see math. Can you see the curve?
Early Reader · Change the reading level on the articleSome shapes look like a saddle. Lines can go many ways. They do not always meet. This is a new way to see. It is very neat. Can you find a shape like this?
Early Reader · Change the reading level on the articleSome things move in waves. Think of a wave in a pool. It moves from one spot to another. It does not hit every spot at once. It travels at a set speed. This helps us know where it goes. Can you see a wave move?
Early Reader · Change the reading level on the articleA triangle has three sides. Most triangles are flat. These special ones are not. They look thin and curvy. They live on a bumpy shape. Can you find a curvy shape?
Early Reader · Change the reading level on the articleDots can be joined together. Sometimes, a line joins just two dots. But other times, a line can join many dots at once. This helps us show how things work in groups. It is a way to see patterns. Can you find groups…
Early Reader · Change the reading level on the articleA man named Ibn Sahl studied light. He saw how light bends. This helps us make glass tools. These tools can focus light in one spot. He lived a long time ago. Can you see how light bends in water?
Early Reader · Change the reading level on the articleSome shapes have many sides. This shape has twenty flat sides. Each side is a small triangle. It looks very neat. You can see many points. It is a fun shape to look at. Can you count the sides?
Early Reader · Change the reading level on the articleMath helps us group things. We can pick a small group from a big group. This group follows a rule. It stays together in a special way. This helps us see patterns. Do you like to group your toys?
Early Reader · Change the reading level on the article