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2025年8月18日 / Last updated : 2025年8月18日 桑子 研 Science

Creating a Volcano Was a Blast! A Recipe for an Explosively Fun Experiment (A Volcano Model Made with Plaster and Baking Soda)

Science class is always most exciting when you can get hands-on. As teachers, there’s nothing more rewarding than seeing our students’ eyes light up and hearing them exclaim, “I get it!” I recently taught a lesson on volcanoes with a student teacher, Mr. H, and our eruption experiment turned out to be an incredible, inquiry-driven […]

2025年8月18日 / Last updated : 2025年8月18日 桑子 研 Science

Easy DIY Hot Air Balloon You Can Fly at Home: How to Make a Mini Hot Air Balloon in 15 Minutes (A Simple Experiment to Learn About Buoyancy)

Have you ever dreamt of soaring through the sky in a giant hot air balloon, traveling wherever the wind takes you? I haven’t been able to make that dream a reality yet, but during a trip to Hokkaido, I happened to look up and saw a breathtaking sight: a sky filled with colorful hot air […]

2025年8月18日 / Last updated : 2025年8月18日 桑子 研 Science

Making and Disposing of Limewater (Do You Buy Limewater? It’s Actually Easy to Make in a Science Lab!)

In a science class, when we talk about detecting carbon dioxide, limewater is the standard solution. But are you a teacher who buys it every time? Of course, it’s one way to save time. However, limewater is actually very easy to make yourself! Why spend money and precious lab space on something that’s mostly water? […]

2025年8月16日 / Last updated : 2025年8月23日 桑子 研 Science

Hidden Trick Discovered! See Infrared with Your iPhone (Take a Peek into the World of Infrared!)

This article is also available as a podcast! Peek into the Invisible: Seeing Infrared with Your Smartphone This article is also available as a video. In science class, understanding “things we can’t see” can often be a turning point for students’ comprehension. One of the best examples of this is light. Many students think of […]

2025年8月16日 / Last updated : 2025年8月16日 桑子 研 Science

Try Making Your Own Fireworks! A Simple Chemistry Experiment (Black Powder & Dry Distillation)

Make Your Own Fireworks and Brighten Up Summer Nights! Why not make a summer night even more special with homemade fireworks? Let’s try making your own sparklers! Perfect for warm evenings, sparklers can actually be made at home. You’ll need just a few materials: wooden chopsticks, sulfur, potassium nitrate, and Japanese paper (washi). With these, […]

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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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