Explaining to kids that $2^n$ can quickly yield high values I have to explain to kids that $2^n$ can yield high values. Not with math and numbers but with a story rather. There was a story about a pharaoh and wheat..

While asking my question, i remembered.

> The Farao's architect.
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> When asked what he wanted paid, the architect said: " _A chess board is 8 by 8 squares. Give me one grain (seed) on the first square, and for each square double the amount. So two on the second square, and four on the third square. And so on for the remaining squares._ "
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> " _Very well_ ", said the Farao, and his country soon went bankrupt.
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> Why?

!A chessboard with grains on it