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 27 of 30
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A signature is a list of signs. It tells us how to use math tools. These tools help us build ideas. It is like a set of building blocks. We use them to make math talk. Can you find math signs in your book?
Early Reader · Change the reading level on the articleNumbers have a sign. Some are more than zero. Some are less than zero. One is just zero. This helps us know which is which. It is like a tiny label. Do you know your numbers?
Early Reader · Change the reading level on the articleNumbers have signs. Some numbers are more than zero. We call these positive. Some numbers are less than zero. We call these negative. Zero is just zero. It is right in the middle. Can you find zero?
Early Reader · Change the reading level on the articleSome shapes look the same. They can be big or small. They can even turn around. But the shape stays the same. This helps us see patterns. Do you see shapes that look alike?
Early Reader · Change the reading level on the articleSome groups are like building blocks. You cannot break them into smaller parts. They are very special. These blocks help us build all other groups. They are small but they matter a lot. Can you find shapes in your room?
Early Reader · Change the reading level on the articleMath can help us plan. It finds the best way to do things. A man named George found a way to do this. It helps us make good choices. Can you use math to plan your day?
Early Reader · Change the reading level on the articleSometimes math has a broken spot. It is a place where things do not work. It can be a jump or a gap. It might even go up too high. Math helps us find these spots. Do you like finding patterns?
Early Reader · Change the reading level on the articleSome lines do not meet. They do not go the same way. They are not side by side. They live in a big space. This helps us see them. Can you find lines like this?
Early Reader · Change the reading level on the articleSometimes things are not even. A shape can lean to one side. One side might be long. The other side might be short. This helps us see patterns. Do you see any leaning shapes?
Early Reader · Change the reading level on the articleMath helps us solve puzzles. We use it to check if ideas are true. Some rules use special names. One rule is named after a man. It helps computers think. Can you find math in your day?
Early Reader · Change the reading level on the articleSome math ideas seem strange. One man found a big puzzle. It is about counting things. Some groups look too big to count. But they might fit in a small space. It is a funny math mystery. Can you find a puzzle too?
Early Reader · Change the reading level on the articleMath has many tools. One tool has a fun name. It is called the snake lemma. It helps us find patterns. It links things together in a line. It looks like a slithering snake. Can you find the snake shape?
Early Reader · Change the reading level on the articleSome shapes are hard to color. They have lines and dots. We try to use three colors. But three colors are not enough! These shapes are called snarks. They are very tricky. Can you find a shape like this?
Early Reader · Change the reading level on the articleImagine water flowing in a pipe. The water moves in a smooth way. It does not pile up. It does not leak out. This helps things move well. It is like a circle. Can you see the flow?
Early Reader · Change the reading level on the articleSome things look big in the sky. They might look big because they are close. They might look big because they are large. The Moon and the Sun look the same size. This helps make an eclipse. Can you see the sun?
Early Reader · Change the reading level on the articleSome shapes take up space. You can hold them in your hands. A ball is one shape. A cone is another. We can measure how big they are. This helps us make computer games. Can you find a shape near you?
Early Reader · Change the reading level on the articleSophie Germain loved numbers. She read many books. She studied even when it was hard. She was a great thinker. Her work helped many people. Do you like to solve puzzles?
Early Reader · Change the reading level on the articleSophus Lie was a man who loved math. He lived a long time ago. He studied how shapes can change. His ideas help us understand the world. He was a great teacher too. Do you like to study shapes?
Early Reader · Change the reading level on the articleMath uses a special idea called space. It is not just the air around us. It is about how things fit together. It helps us see patterns. It helps us find shapes. Can you see shapes in your room?
Early Reader · Change the reading level on the articleWe can study where things are. Maps help us see patterns. We can see where plants grow. We can see where people live. This helps us learn about our world. It helps us stay safe. Can you find a map?
Early Reader · Change the reading level on the articleMath can look at shapes and dots. We use math to see how they link. It helps us find patterns. It helps us find paths. This math is very cool. Can you find a pattern?
Early Reader · Change the reading level on the articleWe can find a spot in space. First, we see how far to go. Then we turn left or right. Next, we look up or down. This helps us map a ball shape. Can you find a ball?
Early Reader · Change the reading level on the articleShapes can live on a ball. These shapes are different. A triangle on a ball is not flat. It has more room. This helps us find our way. Do you like round shapes?
Early Reader · Change the reading level on the articleShapes can have patterns. These patterns live on a ball. They show how things move or shake. They help us see stars and planets. It is like a map for a round world. Can you see the shapes?
Early Reader · Change the reading level on the articleSome math shapes are very special. Most follow a pattern. But these twenty-six do not. They are like rare gems. One is called the Monster. It is very big! Can you find a pattern?
Early Reader · Change the reading level on the articleYou can make a square with numbers. Take a number and use it twice. This makes a new number. It is like making a shape. It helps us find the space inside. Can you try it?
Early Reader · Change the reading level on the articleWe use math to look at the sky. It helps us see how big things are. The moon looks small in the sky. It does not cover much space. This math helps us map the stars. Do you like to look at the moon?
Early Reader · Change the reading level on the articleWe use it to measure big spaces. It can be a park. It can be a city. It is much bigger than a room. It helps us know how much land there is. Can you find a big park?
Early Reader · Change the reading level on the articleWe use this to measure flat space. It is a square shape. Each side is one metre long. It helps us know how big a floor is. It is a very useful way to measure. Can you find a square near you?
Early Reader · Change the reading level on the articleWe use it to measure land. It is a big square. Each side is one mile long. It helps us know how much space we have. It is a very large space. Can you think of a big park?
Early Reader · Change the reading level on the articleA square has four sides. If you draw a line from corner to corner, that is a diagonal. This line is a special length. It is a number that never ends. It is very interesting! Can you find a square?
Early Reader · Change the reading level on the articleCan you make a square and a circle the same size? It is a very hard puzzle. Long ago, people tried to do it. They used tools like a ruler. But it cannot be done! It is a trick that is impossible. Do you like math…
Early Reader · Change the reading level on the articleOne line stays in the middle. Two other lines are on the sides. The side lines move close together. This pulls the middle line with them. It helps us find where it goes. It is like a sandwich. Can you see it move?
Early Reader · Change the reading level on the articleSome things stay the same. A ball on a hill might roll away. A ball in a cup stays still. We study how things move. We see if they stay close or go far. Does a small push change things?
Early Reader · Change the reading level on the articleWe can pair things up fairly. Imagine people picking partners. Everyone has a list of who they like best. We want to find a good match for all. This helps doctors find jobs too. It is a fun puzzle! Can you find a…
Early Reader · Change the reading level on the articleFriends want to pick a room buddy. They each have a list of who they like best. We want everyone to be happy. Sometimes it is hard to pick. No one wants to switch partners. Can you find the best pairs?
Early Reader · Change the reading level on the articleLong ago, people used a new way to measure. It was called a stadion. It was as long as many feet. It helps us know how far to go. We can learn about it today. How far can you walk?
Early Reader · Change the reading level on the articleStan Ulam loved math. He used numbers to solve big puzzles. He even helped build early computers. Math helps us understand the world. It is a very cool tool. Do you like to count things?
Early Reader · Change the reading level on the articleSome lines go up and down. Sometimes a line stops moving. It stays flat for a moment. It can go up or down after. This helps us draw shapes. Can you find a flat spot?
Early Reader · Change the reading level on the articleYou can learn about many things. You look at a few things first. Then you guess about the rest. This helps you know more. It is like a puzzle. Can you find patterns?
Early Reader · Change the reading level on the articleSometimes we check if things are real. We look for patterns. We want to know if it is just luck. We use math to help us. This helps us find the truth. Can you find patterns too?
Early Reader · Change the reading level on the articleStefanie loves math. She looks at patterns. She works at a big school. She has won many prizes. Her work helps us learn. Do you like math too?
Early Reader · Change the reading level on the articleWe can use lists to show numbers. We split numbers into two parts. One part is the stem. The other part is the leaf. This helps us see patterns. It helps us see groups. Can you find a pattern in numbers?
Early Reader · Change the reading level on the articleSome things go up in jumps. It is not a smooth slide. It stays flat for a bit. Then it jumps up. It stays flat again. This helps us see changes. Can you find a jump?
Early Reader · Change the reading level on the articleImagine a round ball. We can draw it on flat paper. We use light to show the shape. It helps us make maps. This makes big things easy to see. Can you draw a circle?
Early Reader · Change the reading level on the articleMath helps us group things. You can put toys into small piles. You can put them in different ways. Some ways use circles. Some ways use lines. These ways help us count. Can you make piles with your blocks?
Early Reader · Change the reading level on the articleMath can help us group things. We can look at how things move in circles. This helps us count many ways to move. It is a fun way to look at patterns. Do you like to find patterns?
Early Reader · Change the reading level on the articleYou can group things in many ways. Imagine you have four toys. You can put them into small groups. You can put them into big groups. This helps us count the ways to share. It is a fun math puzzle. How many groups can…
Early Reader · Change the reading level on the article