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 30 of 30
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A wavelet is a tiny wave. It starts at zero. Then it moves up and down. Finally, it goes back to zero. It helps us hear notes in a song. It can even help us see pictures. Can you find small waves in your world?
Early Reader · Change the reading level on the articleSome lines are very wiggly. They have many tiny bumps. They never get smooth. You can zoom in and see more bumps. It looks like a jagged mountain. Do you like wiggly lines?
Early Reader · Change the reading level on the articleMath uses special signs. We put them in a way that makes sense. It is like a game with rules. These rules help us read the signs. We use them to find what is true. Do you like games with rules?
Early Reader · Change the reading level on the articleSome things have a start. You can count them in order. You can go down a list. But you will always hit the bottom. This helps us solve puzzles. It helps us build things. Can you find a start?
Early Reader · Change the reading level on the articleYou can put things in a line. Each group has a first part. You can always find the start. This helps us count things well. It makes sense to us. Can you find the first toy in your box?
Early Reader · Change the reading level on the articleYou can put things in a line. Each group must have a first part. This helps us find things. It makes a clear path. It is a big idea. Can you line up your toys?
Early Reader · Change the reading level on the articleSome things move in a wiggly way. It looks like a shaky line. It can jump up and down. This helps us study how things move. It helps us see how small bits move. Can you draw a wiggly line?
Early Reader · Change the reading level on the articleOne boy was very smart. He loved numbers and shapes. He could learn many new ways to talk. He even made his own way to talk. He liked to study in private. He wanted to be a normal man. Can you learn something new today?
Early Reader · Change the reading level on the articleWilliam Jones loved numbers. He used a special sign for circles. He taught math on big ships. He also taught math in the city. He was a great teacher. Do you like math?
Early Reader · Change the reading level on the articleWilliam loved math. He made a tool to help with math. It used two parts that slide. This tool helps us multiply. It is very handy. Do you like math too?
Early Reader · Change the reading level on the articleSome men use pictures to show numbers. One man named William made these pictures. He used lines and bars. He even made a circle shaped like a pie. These help us see facts fast. They make math easy to see. Do you like…
Early Reader · Change the reading level on the articleSome numbers are special. We call them prime numbers. They have a neat trick. If you multiply numbers together, they fit a rule. This rule helps us find them. Do you like number tricks?
Early Reader · Change the reading level on the articleImagine you are walking in a big loop. You walk around a tree. We can count your turns. You might go around the tree one time. You might go around it two times. This helps us know your path. How many times would you…
Early Reader · Change the reading level on the articleWinifred loved numbers and stars. She studied math at a big school. She was the first woman to do this. She worked very hard. She opened a door for others. Do you like math too?
Early Reader · Change the reading level on the articleMath can help us guess things. It works with tiny things. It helps us see how they move. This helps us learn about the world. It is a very smart way to think. Can you find math in your room?
Early Reader · Change the reading level on the articleYamagata Aritomo was a leader in Japan. He helped build a new army. He also helped lead the country. This work changed how Japan lived. He was a very busy man. Do you like to lead groups?
Early Reader · Change the reading level on the articleYang Hui was a math man. He lived in China long ago. He liked to work with numbers. He made patterns with shapes. His work helps us today. Do you like math too?
Early Reader · Change the reading level on the articleSome math puzzles are not solved yet. One big puzzle is about tiny bits. We want to know if they have weight. A smart person can win a big prize. Can you help find the answer? It is a very hard job.
Early Reader · Change the reading level on the articleMath helps us see things in new ways. It can show us how things work. We can look at parts to see the whole. This helps us solve big puzzles. It makes math easier to use. Do you like to solve puzzles?
Early Reader · Change the reading level on the articleYou can make shapes with little boxes. Put the boxes in rows. Make the rows get smaller as you go down. You can put numbers in the boxes too. This helps us see patterns. Do you like patterns?
Early Reader · Change the reading level on the articleMath uses things called points. A point is just a tiny dot. It has no size at all. It can be in many places. Points help us find where things are. They are very small. Can you find a tiny dot?
Early Reader · Change the reading level on the articleSome math rules help us find zero. We look for a special number. This number makes the rule equal zero. It is like finding a starting spot. It helps us solve puzzles. Can you find a zero?
Early Reader · Change the reading level on the articleSome math ideas have special spots. Some spots are empty. Other spots are very full. These spots work like a pair. One spot can balance the other. They help us see patterns. Can you find a pattern?
Early Reader · Change the reading level on the articleSometimes, if you win, someone else loses. It is like sharing one cake. If you take a big piece, there is less for your friend. Games like chess work this way too. One person gets more and one gets less. Can you…
Early Reader · Change the reading level on the articleZhu Shijie was a man who loved math. He wrote books about numbers. He traveled to teach many people. His books helped others learn. Math is fun to learn. Do you like math too?
Early Reader · Change the reading level on the articleMath helps us find the biggest things. It can find a group that is as large as it can be. This helps us solve hard puzzles. It makes math work well. Do you like big puzzles?
Early Reader · Change the reading level on the articleZu was a smart man from China. He loved to study the stars. He used sticks to count and solve puzzles. He found a special number for circles. This helped people for a long time. Can you find a circle?
Early Reader · Change the reading level on the article