Blockhead: The Life of Fibonacci by Joseph D’Agnese Illustrator: John O’Brien


What do pinecones, sunflowers, and seashells have in common? The answer lies in a pattern of numbers discovered nearly 800 years ago. Blockhead: The Life of Fibonacci tells the story of Leonardo of Pisa,  boy mocked for his questions and curiosity, who grew up to uncover the famous Fibonacci Sequence, a set of numbers that appears over and over again in the natural world. With witty narration and playful illustrations, this biography introduces students to the idea that math is not just about calculations. It is about seeing the world in a completely different way.


Curriculum Connections

Math Curriculum 

  • Pattern Recognition: Use Fibonacci’s sequence to introduce recursive and explicit formulas.

  • Math in Nature: Invite students to research and present examples of the sequence in natural objects like pinecones, pineapples, sunflowers, and seashells.

  • Golden Ratio Exploration: Dive deeper into the relationship between the Fibonacci Sequence and the Golden Ratio. Have students measure and compare ratios in famous buildings, artwork, and architecture.

SEL & Growth Mindset

  • Use Leonardo’s nickname “Blockhead” to spark a conversation on perseverance and overcoming failure.

  • Explore the importance of asking questions and being curious, even when others don’t understand your thinking.

Art & Cross-Curricular

  • Combine math and art: Have students create a spiral or Fibonacci-based artwork using graph paper or digital design tools.

  • Connect to geometry: Analyze the mathematical beauty of spirals, symmetry, and proportion through the Fibonacci sequence.

Discussion Questions

Math Focus

  1. What patterns do you notice in the Fibonacci sequence?

  2. How can this pattern help us understand or explain things we see in the natural world?

  3. How is Fibonacci’s work still relevant in today’s world?

SEL & Mindset

  1. What does the nickname “Blockhead” tell you about how people viewed Leonardo’s curiosity?

  2. How did Fibonacci turn a negative label into a strength?

  3. Why is asking questions an important part of learning, even if it means standing out?

Cross-Curricular

  1. What examples of the Fibonacci Sequence can we find in nature or design?

  2. How does art reflect math in patterns, ratios, or structure?

  3. Can math help us better understand beauty? How?

Wrapping Up

Blockhead: The Life of Fibonacci reminds us that math is not only a tool but a lens through which we can see the beauty and structure of the world. This book opens the door to conversations about curiosity, resilience, and the surprising connections between math and nature. Use it to inspire students who think math "isn't for them" and show them that math is all around us, sometimes hidden in plain sight.

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