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2025年11月8日 / Last updated : 2025年11月8日 桑子 研 Science

Why Is the Sky Blue and the Sunset Red? Discover the Secret with Soap Bubbles and a Plastic Bottle!

I’m Ken Kuwako, a Science Trainer. Every Day is an Experiment! “Why is the sky blue?” “If it’s blue, then why are sunsets red?” If you’re a science teacher (or maybe a parent), you’ve probably been asked these questions by a child at some point. While explaining “light scattering” using words and diagrams is certainly […]

2025年11月8日 / Last updated : 2025年11月8日 桑子 研 Science

The $1 Science Lesson: Why Your “Facts” About Turtles and Seahorses Are Probably Wrong!

I’m Ken Kuwako, a Science Trainer. Every Day is an Experiment! Hello, everyone! Can you confidently say which class of animal a turtle belongs to? And what about a seahorse? When we judge animals purely by their appearance or where they live, we often get it wrong. What we “think we know” from our daily […]

2025年11月7日 / Last updated : 2025年11月7日 桑子 研 Science

Smaller Than Your Phone: This “Little Giant” is Revolutionizing the Science Lab

This is Ken Kuwako, your science trainer. Every day is an experiment! When you think of science experiments, what comes to mind? Beakers? Flasks? …And that big, heavy “power supply unit”? Lugging it to the lab is a pain, and your desk ends up cluttered with cords. I’ve just found an amazing new item that […]

2025年11月7日 / Last updated : 2025年11月7日 桑子 研 Science

Finding the “Real” Night Sky: A Science Teacher’s Guide to Cosmo Planetarium Shibuya

I’m Ken Kuwako, Science Trainer. Every day is an experiment. Did you know there’s a place in the middle of the city where you can witness a breathtaking view of the “real night sky”? While many planetariums now feature amazing visual technology, a venue that takes the time to carefully explain “the stars you can […]

2025年11月7日 / Last updated : 2025年11月7日 桑子 研 Science

The Power of Weeds! Discover the Secrets of the Resilient Houttuynia—A Perfect Plant for Science Learning (Dicot Observation)

Hi, I’m Ken Kuwako, your science trainer. For me, every day is an experiment! During the damp, humid season, have you ever caught a whiff of that distinctive smell from a plant on the roadside or behind your house? That’s right, it’s Doku-dami (Houttuynia cordata). While most people shy away from it thinking, “Ugh, that […]

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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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