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===Activities===
===Activities===
#'''Familiarising to Cartesian Coordinate system - Activity No 1'''
#'''Familiarising to Cartesian Coordinate system - Activity No 1'''
To introduce the idea, consider the grid on the right. The columns of the grid are lettered A,B,C etc. The rows are numbered 1,2,3 etc from the top. We can see that the X is in box D3; that is, column D, row 3.
D and 3 are called the coordinates of the box. It has two parts: the row and the column. There are many boxes in each row and many boxes in each column. But by having both we can find one single box, where the row and column intersect.
# '''Idea of introducing to coordinates - Activity No2'''
# '''Idea of introducing to coordinates - Activity No2'''
[[http://tube.geogebra.org/material/show/id/147058 Play with the geogebra applet to familiarise with coordinates]]
[[http://tube.geogebra.org/material/show/id/147058 Play with the geogebra applet to familiarise with coordinates]]
