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One Piece of Evidence at a Time
Rosalind Franklin’s DNA Discovery follows two young travelers as they journey through time and are introduced to DNA research and groundbreaking scientific work. Where did the idea behind this story come from?
The idea came from my desire to help young readers see that DNA is more than a diagram in a science book. It represents years of careful observation, experimentation, measurement, and questions asked by real scientists. Rosalind Franklin gave me the opportunity to bring that process to life. Her work with X-ray diffraction, her attention to detail, and her determination to let the evidence guide her conclusions made her an ideal scientist for Jennifer and Daniel to meet through the Portal. I wanted children to enter her world, see the laboratory work taking place around them, and understand that important discoveries are often built one careful piece of evidence at a time.
How does this book build on the educational goals of the earlier books in the series?
Each book in Dr. K’s Portal Through Time combines science, history, and adventure so that children can learn scientific ideas through the people who helped shape them. Book 5 continues that goal, but DNA gives us the opportunity to move into the science of life itself. Jennifer and Daniel are not simply told what DNA is. They see how scientists study structure, interpret evidence, ask questions, and revise ideas as new information becomes available. The book also continues the larger purpose of the series, which is to show children that science is a process of curiosity, observation, persistence, and discovery. I want readers to understand the science, but I also want them to understand how scientists think.
What do you hope readers understand about Rosalind Franklin beyond her connection to DNA?
I hope readers come away seeing Rosalind Franklin as a complete scientist, not only as the person associated with one famous DNA photograph. She was a highly skilled chemist and crystallographer who approached her work with precision, independence, and discipline. She believed that conclusions should be supported by evidence, and she was willing to keep working until the evidence was strong enough. Her scientific career also extended beyond DNA into important research on coal, carbon, and viruses. I want young readers, especially young girls, to see a scientist who was serious about her work, confident in her abilities, and committed to getting the science right.
What would you most like teachers to discuss with students after reading Book 5 in Dr. K’s Portal Through Time series?
I would most like teachers to discuss how scientific knowledge develops and why evidence matters. Rosalind Franklin’s story opens the door to conversations about careful experimentation, collaboration, scientific credit, and the way several researchers can contribute different pieces to a major discovery. It is also a good opportunity to talk about the importance of understanding science within its historical moment. What scientists knew in early 1953 was not the same as what we know about DNA today. I would encourage students to ask what Franklin could observe from her own experiments, what conclusions could reasonably be drawn at that time, and how later discoveries expanded our understanding. Most of all, I hope students leave the discussion knowing that science grows through questions, evidence, persistence, and the willingness to keep learning.
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Jennifer and her brother Daniel have always been curious, raised by their grandfather Dr. Liu to treat science not as a set of facts but as a practice built on observation, honesty, and patience. So when the Time Portal opens once more, they are ready for the journey of a lifetime: London in the early 1950s, where a brilliant and determined scientist named Rosalind Franklin is working to decode one of nature’s greatest mysteries.
Inside the laboratory at King’s College, Jennifer and Daniel witness Franklin’s meticulous craft firsthand. Using X-ray crystallography, she interprets diffraction patterns of scattered light into evidence, building toward the historic image known as Photo 51. But discovery is never simple. The siblings learn that behind every breakthrough lies patience tested and persistence that refuses to surrender. As they follow the trail of data that helped reveal the double helix structure of DNA, they must sharpen their own thinking, choosing evidence over assumption and careful reasoning over easy answers.
In Dr. K’s Portal Through Time: Book 5: Rosalind Franklin’s DNA Discovery, science is not a spectator sport. It is an adventure that demands courage, precision, and the willingness to look closer when everyone else looks away. Includes a companion Science Primer with lesson plans and activities for classroom and home.
Book 5 – Rosalind Franklin’s DNA Discovery: Dr. K’s Portal Through Time
Rosalind Franklin’s DNA Discovery, the fifth book in Dr. Katherine E. A. Korkidis’s Dr. K’s Portal Through Time series, blends time-travel adventure with an introduction to molecular biology. Jennifer and Daniel journey to 1950s London, where Rosalind Franklin guides them through her laboratory work, the creation of X-ray diffraction images, and the evidence behind DNA’s double-helix structure. Their visit later expands to Franklin’s research on viruses, giving readers a broader picture of her scientific career and influence.
The science is presented patiently and in concrete terms. DNA becomes a twisted ladder, diffraction patterns become clues written in light, and model-building turns an invisible molecule into something children can picture. Ideas such as base pairing, replication, hydration, and the connection between structure and function appear several times, creating a steady instructional rhythm. The resource section and science-primer links also make the book especially practical for classroom lessons or further exploration at home.
Franklin emerges as precise, resilient, and deeply committed to evidence. The book pays close attention to her working methods, showing discovery as a process of preparing samples, controlling conditions, recording results, and revising interpretations. It also addresses the prejudice Franklin faced and the delayed recognition of her contributions in clear, age-appropriate language. Much of the story unfolds through explanatory dialogue, so the experience often feels like joining an unusually memorable science lesson with a warm adventure wrapped around it.
I’d recommend Rosalind Franklin’s DNA Discovery to curious upper-elementary and middle-grade readers, particularly children who enjoy biology, experiments, or stories about overlooked figures in history. Parents and teachers looking for an accessible bridge between scientific concepts and character education will also find plenty to discuss, from research ethics and collaboration to perseverance and fair recognition. It’s a thoughtful invitation to see science as both a body of knowledge and a human pursuit shaped by patience, integrity, and curiosity.
Pages: 146 | ASIN : B0H9ZSBQ6F
