Bbc - number time- mend number square, To play this game you'll need a the macromedia shockwave player plug-in. if you can see bill animated, you already have the plug-in. That number square! : nrich.maths.org, Exploring the structure of a number square: how quickly can you put the number tiles in the right place on the grid?. 2d shapes - polygons - maths resources, 2d shapes. regular polygons. a polygon is a plane (2d) shape with straight sides. to be a regular polygon all the sides and angles must be the same:.

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