March 14 seems like a regular day, but it's extra special. 3.14 is a special day because it's pi day! One of the most important numbers in the world is pi, which can be written 3.14159.
Pi is the number you get when you divide a circle's circumference (the measurement around the circle) by its diameter (the measurement across the circle). And it's the same for every circle! You can use pi to calculate lots of things that have to do with circles. Want to know how many pieces of pepperoni will fit on your pizza? You can use pi and the measurement of the pizza and pepperoni to figure it out.
Read these books about pi and other fun math concepts to celebrate this special day.
Sir Cumference and the Dragon of Pi: When Sir Cumference accidentally turns his father into a dragon, he has to solve a math problem in order to save him. Will he be able to figure out the math riddle in time?
Stack the Cats: When you have lots of cats, they can be counted and arranged in many ways. But don't stack the cats too high or they'll fall! Explore different ways to group numbers in this book featuring cute and cuddly felines.
Which One Doesn't Belong? Every page has four shapes. Each of these shapes belongs to the group on the page in one way, but in another way, it doesn't belong. Can you figure out all the different ways to group these shapes together as you read?
Millions, Billions & Trillions: How big is a million? Could you count to a trillion? Learn all about really, really, really big numbers and how you can imagine them in this playful math book.
How Many Guinea Pigs Can Fit on A Plane? Have you ever wondered, "When will I be a billion seconds old?" Or how many birds would it take to pick up a person and fly with them? This book is full of real questions asked by real kids that are answered using math—and they'll show you how!
Looking for more? Check out our Easy as 1, 2, 3: Math for Kids booklist for books to enjoy all year round.