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2025年12月5日 / Last updated : 2025年12月5日 桑子 研 Science

Giant Salmon Roe or Tarako?! Make Your Own Mysterious “Water Ball” You Can Hold!

Science Trainer Ken Kuwako: Where Every Day is an Experiment. Have you ever tried holding water directly in your hands? Yesterday, my science club students and I whipped up these jiggly “Water Balls.” They look like drinking water from a futuristic sci-fi movie, but this is actually a chemistry experiment using very common ingredients. While […]

2025年12月4日 / Last updated : 2025年12月4日 桑子 研 Science

Held Up Without Glue! The Magic of Friction from Just Two Toothbrushes

I’m Ken Kuwako, a Science Trainer. Every day is an experiment! Can you imagine a toothbrush suddenly transforming into a heavy-lifting powerhouse? We’re going to show you an experiment where a simple tool, usually just for cleaning teeth, unleashes astonishing power through the magic of science. It’s a perfect, everyday trick to experience the fun […]

2025年12月3日 / Last updated : 2025年12月3日 桑子 研 Science

The Half-Height Secret: The Physics Trick That Lets Any Mirror Reflect Your Entire Body

Unlocking the Mirror Mystery: Why Half Your Height Is All You Need I’m Kuwako Ken, your Science Trainer. Every day is an experiment. When you head to the furniture store looking for a full-length mirror for your fashion check, do you find yourself searching for one that’s exactly the same height as you? Here’s a […]

2025年12月3日 / Last updated : 2025年12月3日 桑子 研 Science

Trace the “Footprints” of an Earthquake! Discover Hidden Secrets with Isoseismal Maps on a Blank Chart

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. You may have heard the phrase, “An earthquake is a living entity.” How does a phenomenon that occurs deep underground travel and manifest on the surface? We held a lesson designed to visualize the “footprints of an earthquake,” something you can’t grasp just by […]

2025年12月2日 / Last updated : 2025年12月3日 桑子 研 Science

A Science Teacher’s Secret to Winning Daruma-Otoshi: Master It with Newtonian Physics!

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. The Daruma Otoshi is a traditional Japanese folk toy, beloved by many. But did you know that it’s also a surprisingly perfect teaching tool for demonstrating the Law of Inertia that you learn in science class? While it’s often cited as a textbook example, […]

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運営者: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。理科教師として勤務する傍ら、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
I want to share the fun, wonder, and excitement of science with as many people as possible. In addition to my work as a science teacher, I also work as a "Science Trainer," providing scientific supervision for and appearing on TV programs, holding hands-on science workshops, and writing science books.

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