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September 2025

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2025年9月30日 / Last updated : 2025年9月30日 桑子 研 Science

Make Your Own Earth Cake: The Fun, Hands-On Strata Experiment!

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! When we delve into Earth Science, students naturally start asking, “What exactly is a stratum (layer of rock/soil)?” Showing them diagrams and photos from the textbook doesn’t always click. They look unconvinced, asking things like, “Does it really stack up like that?” or “What’s […]

2025年9月29日 / Last updated : 2025年9月29日 桑子 研 Science

Spin an Acorn, Control a Satellite: The Amazing Physics of the DIY Gyroscope

I’m Ken Kuwako, Science Trainer. Every day is an experiment. The little treasure of autumn rolling in the park… an acorn. Doesn’t finding one just make you happy? But did you know that this acorn holds the key to unlocking scientific wonders, and is even connected to space technology? This time, let’s dive into the […]

2025年9月29日 / Last updated : 2025年9月29日 桑子 研 Science

The 10-Story Fried Rice Toss: The Physics of Your Kitchen Flip

I’m Ken Kuwako, your Science Communicator. For me, every day is an experiment. 【This article is also available as a radio broadcast!】 One day, a friend who frequently makes fried rice at home asked me a peculiar question that popped into his head while tossing rice in his pan: “If you want a single grain […]

2025年9月29日 / Last updated : 2025年9月29日 桑子 研 Science

One-Button Setup & Operation: Observing the Sun (Sunspots) with the SeeStar Smart Telescope

I’m Ken Kuwako, Science Trainer. Every day is an experiment. Have you ever looked up at the stars glittering in the night sky and felt your heart race, wondering, “What is the source of that light?” or “What lies at the edge of the universe?” In the past, astronomy was a somewhat specialized hobby. It […]

2025年9月29日 / Last updated : 2025年9月29日 桑子 研 Science

Unlock the Mystery with Marbles! How Speed and Mass Create Energy — A Hands-on Guide to Kinetic Energy and Work

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. The immense force of a bowling ball spectacularly knocking down pins. The sheer impact when a pitcher’s fastball smashes into the catcher’s mitt with a thwack! Behind these powerful everyday phenomena lies a fascinating scientific secret: the moment an object’s “energy” is transformed into […]

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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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