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2025年9月10日 / Last updated : 2026年4月23日 桑子 研 Science

Be an Explorer! Discover the Tiny Wonders Hidden Inside an Onion Skin (Cell Observation)

I’m Ken Kuwako, your Science Trainer. To me, every day is an experiment. The humble onion—a staple in every kitchen, essential for curries and stews. But did you know that hidden behind every single layer of its skin lies a vast, microscopic blueprint that looks like a galaxy of its own? The moment you peer […]

2025年9月10日 / Last updated : 2025年9月9日 桑子 研 Science

The Sea Urchin’s Pillow: Unraveling the Science and Romance of “Tako-no-Makura”

I’m Ken Kuwako, a science trainer, and for me, every day is an experiment. “What did you find when you went to the beach this summer?” I often start my classes with that question. Today, I’d like to share an interesting topic that’s perfect for engaging students. Recently, while walking along the beach, I came […]

2025年9月10日 / Last updated : 2025年9月9日 桑子 研 Science

A Fun “Oscilloscope” Web App Anyone Can Touch! (Using Scratch to Find Learning Materials)

I’m Ken Kuwako, your science trainer. Let’s have fun with science together on this site. 【Read this article in English】 No Oscilloscope? No Problem! Teaching Ideas to Visualize Sound with Scratch and Free Tools In science class, have you ever wanted to visualize the “loudness of sound” or “waveforms” but found that a real oscilloscope […]

2025年9月9日 / Last updated : 2025年10月13日 桑子 研 Science

Jewels Appearing Before Your Eyes! Uncover the Secret of Temperature Through the Recrystallization of Potassium Nitrate and Salt!

Ken Kuwako, Your Science Trainer: Every Day’s an Experiment! Do you ever stop to think about “crystals” in your daily life? They’re actually all around us! Take the frost on your window on a cold winter morning, the intricate patterns of snowflakes, or even the tiny grains of sugar and salt on your table – […]

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

Achieve success on time! The secrets to the saliva and starch reaction experiment.

I’m Ken Kuwako, your science trainer. Every day is an experiment. The experiment to check “how saliva reacts to starch” is a staple in the 8th-grade science curriculum on digestion. If you’ve ever tried it, you know it can get pretty hectic. You’re trying to do everything with a timer in one hand, and if […]

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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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