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2025年9月9日 / Last updated : 2026年6月19日 桑子 研 Science

Master the Saliva & Starch Experiment in 50 Minutes! — Clever Tricks That Actually Work in Class

I’m Ken Kuwako, the Science Trainer. Every day is an experiment. One of the classic experiments in a second-year junior high school unit on digestion investigates how saliva reacts with starch. Once you actually run it in class, you quickly realize just how busy it is. There are lots of steps, and unless students work […]

2025年9月8日 / Last updated : 2026年9月24日 桑子 研 Science

Why Don’t We Fall Over When We Bow Deeply? The Hidden Secret of “Center of Gravity” in Everyday Life

I’m Ken Kuwako, a science trainer. Every day is an experiment! Have you ever seen the legendary entertainer Michael Jackson perform his astonishing “zero-gravity” move? It’s that incredible performance where he appears to break free from gravity, leaning his entire body forward at a sharp angle without falling over. Watch this video. How on earth […]

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 : 2026年9月17日 桑子 研 Science

“Amazing Encyclopedia” Transforms Insect Class! Dive into the Micro World, Tablet in Hand!

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Today, I’d like to introduce an absolutely amazing teaching resource: “Monosugoi Zukan” (Amazing Encyclopedia), a digital encyclopedia created by NHK for School! https://www.nhk.or.jp/school/zukan/ This isn’t just an ordinary digital encyclopedia. You can observe living things from all kinds of angles, almost as if you […]

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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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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