Summary
Martin finds a magical firefly and the brothers discover the science behind bioluminescence — how fireflies produce cold light in their abdomens using a chemical reaction. They also uncover a darker secret: the predatory Photuris firefly mimics other species' flash patterns to lure in prey.
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Teaching resources
Discussion questions
Discussion
Fireflies produce light through a chemical reaction inside their bodies — it's called bioluminescence, and it's completely cold light (no heat wasted).
- Why do fireflies flash? What is the flash signal used for?
- How does the predatory Photuris firefly use flash signals differently from other fireflies?
- Can you think of another animal that uses light, color, or pattern as a signal or a trap?
Quick work-a-long
Vocabulary: bioluminescence, luciferin, mimicry, predator, signal.
Try it: Make a simple code using short and long "flashes" (dots and dashes). Write a message to a partner using only your code.