Educational video for children to learn what Number Pi is and how we use it. Number Pi is a mathematical constant which indicates the relation between the perimeter and the diameter of a circumference. It's about fitting the diameter as many times as possible into the perimeter of the circumference. We say that it's a constant because number Pi (π) is the same for every circumference in the world, in other words, this number is always equal to 3.14. In this video, the little ones will look at several examples that show Pi is a mathematical constant, through easy and fun calculations. Many architecture, mechanics or engineering projects wouldn't be made possible without number Pi.

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