# algebra

Home/Tag: algebra
6 08, 2017

## René Descartes – European philosophy

By |2019-05-06T07:44:32-07:00August 6th, 2017|Modern Europe, Philosophy|0 Comments

René Descartes Who was Descartes? René Descartes was one of the earliest philosophers of the European Enlightenment, in the early 1600s AD. He was just 8 years younger than Hobbes. While Descartes [...]

4 08, 2017

## Medieval science in Europe

By |2018-04-24T09:01:17-07:00August 4th, 2017|Medieval, Science|1 Comment

Medieval science: an Italian pharmacy jar, about 1400 AD (Metropolitan Museum, New York) Learning from Islamic science During the Middle Ages, the best scientists and doctors weren't in Europe. They were [...]

29 07, 2017

## Numbers and math

A number line is infinite in both directions. Numbers are a convenient way for people to organize their thoughts about space and time. First we can think of zero as a point, taking up no [...]

29 07, 2017

Geometry: This is an equilateral trangle. What is geometry? The simplest geometric idea is the point, and then the line, the plane, and the solid. Shapes like circles, squares, rectangles, and triangles are flat, and we can think of [...]

27 07, 2017

## What is algebra? Math made simple

Simple equations on a graph Algebra is the way Islamic mathematicians figured out to connect our ideas about geometry with our ideas about numbers. You can use equations to represent geometric shapes. You can [...]

27 07, 2017

## Simple equations – Algebra

Simple equations on a graph Start by thinking of a number line When we learn to add and subtract, multiply and divide, we think of numbers as being all along the number line. But in algebra we think about numbers as [...]

27 07, 2017

## Number plane project – Battleship

A game of Battleship A fun way to practice plotting points on the number plane is to play Battleship. You will need two pieces of graph paper, two pencils, and two kids. Each kid [...]

27 07, 2017

## Medieval Islamic mathematics

By |2019-10-07T05:03:36-07:00July 27th, 2017|Islam, Math|0 Comments

Indian numbers and medieval Islamic mathematics Indian numbers About 630 AD, just before the Islamic empire got started, people in West Asia learned from traders or traveling scholars about "Arabic" numbers. Indian mathematics The invention [...]

27 07, 2017