Educator Paul Lockhart's goal is to demystify arithmetic: to bring the subject to life in a fun and accessible way, and to reveal its profound and simple beauty, as seen through the eyes of a modern research mathematician. The craft of arithmetic arises from our natural desire to count, arrange, and compare quantities. Over the centuries, humans have devised a wide variety of strategies for representing and manipulating numerical information: tally...

At a school picnic, Eddie uses his knowledge of numbers to outsmart the people who come to his game booth. Is your age more than 5? Is it less than 10? Eddie's got to guess. And he doesn't want to be wrong! Eddie has a booth at the school fair, guessing people's ages. He hasn't guessed wrong yet, but if he does, he gets dunked. Can Eddie keep guessing right -- and keep from getting wet? Comparing whole numbers and understanding what's more and what's...

"Lleno de actividades entretenidas y estimulantes, este libro enseña destrezas matemáticas de una forma divertida. Le permite al lector aprender activamente sobre las matemáticas de una manera atractiva e interactiva que combina el aprendizaje con el juego. Rompecabezas, juegos de ingenio y puzzles numéricos llenan las páginas de este libro desafiante que promueve la agudeza mental"--Amazon.com, viewed July 29, 2013. Filled with entertaining...

While trying to save enough money to buy a new ice scooter, Perry the Penguin learns about managing his money and about negative numbers.

"From modern-day challenges such as balancing a checkbook, following the stock market, buying a home, and figuring out credit card finance charges to appreciating historical developments by Pythagoras, Archimedes, Newton, and other mathematicians, this engaging resource addresses more than 1,000 questions related to mathematics. Organized into chapters that cluster similar topics in an easily accessible format, this reference provides clear and concise...

Discusses estimating, regrouping, place value, and more.

Over 100 kid-friendly math problems on topics from jalapeños and submarines to roller coasters and flamingos, designed to make math a fun part of kids' everyday lives.

"Nuestra misión: que las mateḿáticas sean una parte divertida en la vida de los niños. Leer cuentos a los ñños antes de dormir es maravilloso, pero ¿qué pasa con las matemáticas? Mucha gente no se siente cómoda con las matemáticas y los números, y con frecuencia oímos el "¡Es que no se me dan bien!". Esta actitud se ha ido pasando de padres a hijos durante décadas, y ahora, en nuestra cultura, se piensa que las matemáticas son difíciles,...