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2026年9月19日 / Last updated : 2026年9月19日 桑子 研 Science

Red Blood Cells in a Fish’s Tail?! The Ultimate Science Lesson — Watching “The Flow of Life” at 100x Magnification

I’m Ken Kuwako, a science trainer. Every day is an experiment. A Tiny Drama of Life Unfolding Under the Microscope When you hear “observing the tail fin of a medaka fish under a microscope,” you might wonder: How much can you actually see? And how should you prepare for it? But once you try it, […]

2026年9月18日 / Last updated : 2026年9月18日 桑子 研 Science

Moldy Blue Mandarin Turns Deliciously Yellow!? The Secret Behind the “Magic Paper” That Amazed a Kindergarten

I’m Ken Kuwako, a science trainer. Every day is an experiment. “Teacher, is this magic paper!?” Those amazed voices filled the kindergarten classroom. This year, we launched a Science Show Development Seminar at our school, bringing together 20 students who absolutely love science. This time, I visited Sonohara Kindergarten with these students, where we put […]

2026年9月16日 / Last updated : 2026年9月16日 桑子 研 Science

See the Invisible: Making Magnetic Fields Visible with Pascal Wire

I’m Ken Kuwako, a Science Trainer. Every day is an experiment! How do you teach students about the relationship between electric current and magnetic fields? There are quite a few rules to remember, such as the “right-hand screw rule” and “Fleming’s left-hand rule,” but helping students actually experience the presence of an invisible magnetic field […]

2026年9月15日 / Last updated : 2026年9月15日 桑子 研 Science

Hunt for the Hidden Magnets in Your Smartphone! The Surprising Truth Revealed by Iron Filings

I’m Ken Kuwako, a science trainer. Every day is an experiment! The smartphone you hold in your hands every day is hiding several tiny “magnets” inside its slim body. Did you know that? In this experiment, we’ll sprinkle some handy MagChip over a smartphone instead of iron filings and reveal the invisible magnetic fields hiding […]

2026年9月14日 / Last updated : 2026年9月14日 桑子 研 Science

Tap, Tap, Reveal! The Mysterious Patterns of Magnetic Field Lines (Observing Magnetic Fields)

I’m Ken Kuwako, a Science Trainer. Every day is an experiment. The “magnetic field” that forms around magnets and electric currents is an invisible concept, which can make it difficult for students to visualize. In class, I explain things like, “Magnetic field lines run from the north pole to the south pole,” and “The direction […]

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運営:桑子研(くわこ けん)
科学の楽しさや不思議、感動を多くの人に届けていきたい。サイエンストレーナーとしてテレビ番組の科学監修・出演、実験教室、科学本執筆なども行っています。

Author: Ken Kuwako
My mission is to share the joy, wonder, and excitement of science with as many people as possible. As a Science Trainer, I stay busy supervising and appearing on science-themed TV programs, hosting hands-on experiment workshops, and authoring science books.

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