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September 2025

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2025年9月8日 / Last updated : 2025年9月8日 桑子 研 Science

The Science Show Sensation! Find the Best Recipe for Elephant’s Toothpaste! 🐘

Hi there, I’m Ken Kuwako, a science trainer. Let’s enjoy the wonders of science together on this site! 【This article is also available as a radio broadcast!】 【Read this article in English】 Have you ever heard of the experiment known as “Elephant’s Toothpaste“? When the experiment begins, a massive amount of foamy bubbles erupts, as […]

2025年9月8日 / Last updated : 2025年9月8日 桑子 研 Science

How is it possible to take a deep bow without falling? The Secret of the Center of Gravity Hidden in Everyday Life.

I’m Ken Kuwako, the Science Trainer. Every day is an experiment. Have you ever seen Michael Jackson’s incredible “Zero Gravity” lean? It’s that mind-bending move where he tilts his body at an impossible angle without falling, as if he’s defying gravity itself. Check out the video here. How in the world is that even possible? […]

2025年9月7日 / Last updated : 2025年9月7日 桑子 研 Science

The Big Bang: When Hydrogen and Oxygen Ignite! A Dazzling Chemical Reaction That’ll Blow Your Mind.

I’m Ken Kuwako, a science trainer. Every day is an experiment. 【This Article is also a Podcast!】 Experience the Power of Detonating Gas! A Chemical Reaction of Sound and Light In the science lab, when students get to work with “hydrogen” and “oxygen,” their eyes light up. An invisible gas that makes a “pop!” sound […]

2025年9月7日 / Last updated : 2025年9月7日 桑子 研 Science

Transforming Science Class with the “Incredible Encyclopedia”! A Tablet-Guided Dive into the Microscopic World of Insects!

Hi, I’m Ken Kuwako, a science trainer. Every day is an experiment! 【This article is also available as a podcast!】 Today, I’m excited to introduce a truly “incredible” teaching tool: the digital encyclopedia provided by NHK for School, “Incredible Encyclopedia”! https://www.nhk.or.jp/school/zukan/ This is no ordinary digital encyclopedia. It lets you observe creatures from every angle, […]

2025年9月6日 / Last updated : 2025年9月6日 桑子 研 Science

Exam Alert! Electrostatic Induction & Grounding Made Easy — 5 Steps with the Gold-Leaf Electroscope

Hi, I’m Ken Kuwako, a science trainer. Every day is an experiment! The gold-leaf electroscope experiment is a great way to visualize the invisible movements of electricity, but it’s not always easy to wrap your head around, is it? Static electricity is something we’ve all experienced—the crackle when you take off a sweater in elementary […]

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著者: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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Why Does Salt Water Conduct Electricity but Sugar Water Doesn’t? The Shocking Secret of Kitchen Chemistry!

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