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May 2026

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2026年5月31日 / Last updated : 2026年5月31日 桑子 研 Science

The Secret Behind a Spinning Top Is Written in the Stars! Discover the Mystery of Precession with a Gyroscope Globe

I’m Ken Kuwako, the Science Trainer. Every day is an experiment. Experience Precession with an Earth Gyroscope! Have you ever wondered why a spinning top doesn’t simply fall over? It’s just spinning, yet somehow it stays upright. Once you discover the reason, you might find yourself thinking, “Physics is actually amazing!” Today, I used an […]

2026年5月30日 / Last updated : 2026年5月30日 桑子 研 Science

Electric Man, Delivery Guy & Run, Melos! — Middle Schoolers Get Serious About Modeling Current and Voltage

I’m Ken Kuwako, the Science Trainer. Every day is an experiment. “What exactly is flowing when we talk about electric current?” How would you answer that question? It’s easy to repeat the definition from a textbook. But the moment you can explain it in your own words, using your own model, that’s when true understanding […]

2026年5月29日 / Last updated : 2026年5月29日 桑子 研 Science

Cloudy Day? No Problem! A Complete Guide to Photosynthesis Experiments with Elodea & Brome Grass

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. When the water’s color gradually shifts, students’ eyes light up. “Whoa, it changed!” That single moment of discovery is exactly why we do science experiments. Today, I’ve put together a guide on how to successfully run a middle school classic: observing photosynthesis using Elodea […]

2026年5月28日 / Last updated : 2026年5月28日 桑子 研 Science

Recreate the Solar System with a Steel Ball and Magnet! Feel the Motion of Planets with a Conical Pendulum

I’m Ken Kuwako, your Science Trainer. Every day is a new adventure in discovery! “Why do planets race around the Sun when they’re close, but drift more slowly when they’re far away?” To bring this incredible mystery of space down to Earth, I built a simple hands-on experiment you can try in the classroom. All […]

2026年5月27日 / Last updated : 2026年5月27日 桑子 研 Science

From Chaos to Clarity: How I Teach Circuit Diagrams in the Classroom

I’m science trainer Ken Kuwako. Every day is an experiment. Have you ever opened a science textbook, looked at those sharp, angular circuit diagrams, and thought, “This looks complicated…” or “Why do I even need to memorize these symbols?” But hidden inside every one of those tiny symbols is generations of human ingenuity — a […]

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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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