Espresso Education - Espresso and Clipbank Math Baseball Advertisement One Player Pick the kind of game and level you wish to play. Click "Play Ball" to begin. How to Play: FUNBRAIN will give you a math problem. Free Calculus The Calculus Here is a free online calculus course. This is essentially an ordinary text, but you can read it online. There are lots of exercises and examples. This text is somewhat unusual for two reasons. The text is rigorous. Both points are no doubt controversial, but conceptually the approach gives a kind of clean synergy which generates important examples and unifies calculus to a great extent. Unfortunately, there are no doubt uncorrected typographical errors and logical errors. This text © 1993, 2001 Copyright William V. Table of Contents
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TeXample.net Fun 4 the Brain - Beyond the Facts Have fun while diving into some factoring and fractions! Greatest Common Factor Sketch lives in a wonderful world drawn on notebook paper. But, mean erasers are trying to erase his world. Help Sketch collect pencils and paints while doing finding the GCF to help save his world! Least Common Multiple Practice finding the LCM, but watch out if you are wrong! Prehistoric Calculus: Discovering Pi Pi is mysterious. Sure, you “know” it’s about 3.14159 because you read it in some book. But what if you had no textbooks, no computers, and no calculus (egads!) — just your brain and a piece of paper. Could you find pi? Archimedes found pi to 99.9% accuracy 2000 years ago — without decimal points or even the number zero! How do we find pi? Pi is the circumference of a circle with diameter 1. Say pi = 3 and call it a day.Draw a circle with a steady hand, wrap it with string, and measure with your finest ruler.Use door #3 What’s behind door #3? How did Archimedes do it? Archimedes didn’t know the circumference of a circle. We don’t know a circle’s circumference, but for kicks let’s draw it between two squares: Neat — it’s like a racetrack with inner and outer edges. And since squares are, well, square, we find their perimeters easily: Outside square (easy): side = 1, therefore perimeter = 4Inside square (not so easy): The diagonal is 1 (top-to-bottom). Squares drool, octagons rule Cool!
Arquímedes Arquímedes murió durante el sitio de Siracusa (214–212 a. C.), cuando fue asesinado por un soldado romano, a pesar de que existían órdenes de que no se le hiciese ningún daño. A diferencia de sus inventos, los escritos matemáticos de Arquímedes no fueron muy conocidos en la antigüedad. Los matemáticos de Alejandría lo leyeron y lo citaron, pero la primera compilación integral de su obra no fue realizada hasta c. 530 d. C. por Isidoro de Mileto. Biografía[editar] Plutarco escribió en su obra Vidas paralelas (Vida de Marcelo, 14, 7) que Arquímedes estaba emparentado con el tirano Hierón II de Siracusa.[10] Se sabe que un amigo de Arquímedes, Heráclides, escribió una biografía sobre él pero este libro no se conserva, perdiéndose así los detalles de su vida.[11] Se desconoce, por ejemplo, si alguna vez se casó o tuvo hijos. Cicerón y los magistrados descubriendo la tumba de Arquímedes en Siracusa, de Benjamin West (1797). Descubrimientos e invenciones[editar] La corona dorada[editar]