"La mayor parte de las ideas fundamentales de la ciencia son esencialmente simples, y deben, como regla, ser expresadas en un lenguaje que cualquiera pueda comprender".
A. Einstein

## domingo, 16 de octubre de 2011

### Mathematicians have powers

We usually say that witches, wizards and fairies have powers. What is a Power in Maths? We have three words for the same concept: power, exponents and indices. But, what is that?

In a power, we have two main parts:
1. The exponent of a number says how many times to use the number in a multiplication (2 in the example)

2. The base, that says what number is multiplied by itself (8 in the example)

.

Try on the following website to multiply any number by itself as many times as you want using exponents: See website

If you want to learn what is the meaning of cubed, squared or index form go to the next link: Click here

Once you know everything about powers, you only have to go over the index laws.
To finish with powers, have a little practice by doing these exercises.