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November 2025

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2025年11月27日 / Last updated : 2025年11月27日 桑子 研 Science

The Pine Tree: A Dinosaur-Era Living Textbook in Your Schoolyard

Ken Kuwako, Science Trainer. Every day is an experiment. In schoolyards, parks, shrine grounds, and along the coast, the pine tree (Matsu) is an ubiquitous part of the Japanese landscape. Its distinctive long, needle-like leaves, rugged trunk, and powerfully spreading branches possess a dignified presence, much like a traditional Japanese painting. However, this pine is […]

2025年11月26日 / Last updated : 2025年11月25日 桑子 研 Science

The Physics of Fables: Graphing the Tortoise and the Hare’s Hidden Science

I’m Ken Kuwako, your Science Trainer. Every Day is an Experiment. The fable of “The Tortoise and the Hare” is one we all heard as children—a race between the quick-footed hare and the slow-but-steady tortoise. But did you know that when viewed through a “scientific lens,” this story becomes an excellent teaching tool for understanding […]

2025年11月25日 / Last updated : 2025年11月25日 桑子 研 Science

Wild Weeds Are a Treasure Trove! Discover the Secrets of Monocots and “Closed Flowers” with Wall Barley

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Do you ever pay attention to the “weeds” growing along the paths you walk every day? It’s a huge missed opportunity to just walk past them, dismissing them as “just grass”! In reality, the plants at your feet are hiding incredible “survival strategies” they’ve […]

2025年11月24日 / Last updated : 2025年11月24日 桑子 研 Science

Can You Touch Sound? The Simple Home Experiments That Prove Sound Is Energy

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Let me ask you a sudden question: Have you ever touched sound? Your initial reaction is probably, “What? Sound is invisible! There’s no way you can touch it!” That’s a completely normal thought. We usually perceive sound as something we “hear” with our ears. […]

2025年11月24日 / Last updated : 2025年11月24日 桑子 研 Science

Ignite with Air Power! Feel the Explosive Force of Adiabatic Compression with the “Fire Piston” Experiment

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. What if I told you there’s a way to instantly create fire using only the power of air, without a single match or lighter? It sounds like magic, but this is a genuine science experiment. Today, I’m introducing you to an amazing device that […]

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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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