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 * =** Binary numeration system[[image:blanco200.jpg]] **=
 * The Indian scholar [|Pingala] (around 5th–2nd centuries BC) developed mathematical concepts for describing [|prosody], and in doing so presented the first known description of a binary numeral system. He used binary numbers in the form of short and long syllables (the latter equal in length to two short syllables), making it similar to [|Morse code].

0 0 0 1 numerical value 1 0 0 1 0 numerical value 2 0 0 1 1 numerical value 3 0 1 0 0 numerical value 4 0 1 0 1 numerical value 5 0 1 1 0 numerical value 6 0 1 1 1 numerical value 7 1 0 0 0 numerical value 8 || ||   || = = = Learn it yourself **(if you are nerd enough)** = media type="youtube" key="qdFmSlFojIw" height="563" width="756"
 * Pingala's Hindu classic titled [|Chandaḥśāstra] (8.23) describes the formation of a matrix in order to give a unique value to each meter. An example of such a matrix is as follows :
 * 0 0 0 0 numerical value 0[[image:blanco200.jpg]]

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More information
@http://www.mathplayground.com/howto_solvevariable.html

Talking about geometry (speaking)
Working in pairs ask to your partner one of you have to make a question and the other must give the first what he needs:
 * Please, hand me a shape with 5 sides
 * Please, hand me a shape with 3 sides
 * Please, hand me a triangle
 * Please, hand me ... and so on ...

Print the image and cut to get the different shapes of the game:

More information: @http://www.bbc.co.uk/bitesize/ks1/maths/shapes/play/popup.shtml

Arithmetic games

 * @http://www.basic-mathematics.com/money-counting-game.html
 * @http://www.basic-mathematics.com/mathman.html
 * @http://www.basic-mathematics.com/order-of-operations-game.html
 * @http://www.basic-mathematics.com/Bouncing-balls.html
 * @http://www.basic-mathematics.com/addition-games.html