Conosciamo il mondo dei numeri naturali soffermandoci sui suoi abitanti speciali. Si inizia da 0, il più piccolo numero naturale, e si aggiunge ogni volta 1 per ottenere infiniti altri elementi.
Il gioco associato a questa canzone è “Il quadrato dei numeri naturali”; si tratta di mettersi alla prova con i primi 100 numeri naturali cercando di inserirli secondo determinate regole in uno schema formato da 100 caselle.
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