By Sharon Kane
Numbers fascinated Italian mathematician Fibonacci. He probably would have liked 2010; that year saw the publication of three intriguing picture books featuring the number sequence named for him (in 2016, the books are worth revisiting). I think I would first share with students Growing Patterns: Fibonacci Numbers in Nature, by Sarah C. Campbell (Honesdale, PA: Boyds Mills Press). The short, simple text on each page instructs readers to count the petals on various flowers. (Photographs are by the author and Richard P. Campbell.) The pattern is noted, as is the rule “in order to get the next number, you add the two numbers before it” (p. 13). Later pages contain a bit more text, explaining how the principle applies to spirals in nature. Pine cones, sunflowers, pineapples, and snails are pictured in vivid color.
After students have had time to appreciate the mathematical and visual beauty they encounter in nature, I’d offer them Blockhead: The Life of Fibonacci, by Joseph D’Agnese (New York: Henry Holt and Company. Illustrated by John O’Brien). The author fictionalizes some details of Fibonacci’s youth and his relationships with family and friends, since little is known about the mathematician. Readers become involved in the solution to a riddle about rabbit reproduction and discover, along with Fibonacci, that “These are the numbers Mother Nature uses to order the universe” (p. 36). On the last page the author invites readers to go beyond the pages of the book, offering clues as to where to look for more Fibonacci number patterns in nature.
Both books speak of a mathematical rabbit problem Fibonacci posed more than 800 years ago. So, head next to Emily Gravett’s picture book/calendar The Rabbit Problem (Simon & Schuster). You’ll see what happens when two rabbits fall in love in Fibonacci’s Field and must stay there for a year with their growing family. A delightful surprise occurs in December, when they are allowed out and the population of the field changes from 144 pairs to 0.
Appropriate for intermediate, middle, and high school grades
math, ELA, art, science