And so six-year-old Lauren there noticed that the first one took one, and the second one took three more and the total was four on that one, the third one took five more and the total was nine on that one, and then the next one.
A Lauren, de seis anos, reparou que o primeiro precisou de um e o segundo precisou de mais três, e o total naquele era de quatro. O terceiro precisou de mais cinco e naquele o total foi de nove, e depois o seguinte.