The Number Devil: A Mathematical Adventure by Hans Magnus Enzensberger

Author:Hans Magnus Enzensberger [Enzensberger, Hans Magnus]
Language: eng
Format: epub
Tags: Childrens, Fantasy, Fiction, Mathematics, Science
Amazon: B009OZN7IO
Publisher: Metropolitan Books
Published: 2000-05-01T23:00:00+00:00

“Fine, fine,” the number devil said, clapping his hands, and all of a sudden it was dark again. “Are you up to a visit from some more old friends?” he asked.

“It depends on who they are.”

The number devil clapped three times, and the cubes instantly lit up again, though this time some were orange, others blue, and yet others green or red.

“Looks like a Christmas tree,” said Robert.

“Do you see the color-coded stairs leading from the top right to the bottom left? What do you think will happen if we add up each color? Start with the red one on top.”

“Which is all by itself,” said Robert. “One, as always.”

“Now the yellow one just below it.”

“All by itself. One.”

“Now we come to the blue. Two cubes.”

“1 + 1 = 2.”

“Then the green just below it. Two green cubes.”

“2 + 1 = 3.”

By now Robert knew what to expect.

“Red again: 1 + 3 + 1 = 5. Then yellow: 3 + 4 + 1 = 8. And blue: 1 + 6 + 5 + 1 = 13.”

“Tell me, what’s going on here with this 1, 1, 2, 3, 8, 13…?”

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