I’m Science Trainer Ken Kuwako. Every day is an experiment! The Daniel Cell is a classic and essential topic for understanding how batteries work. However, I know many teachers struggle with the lengthy preparation and the hassle of disposing of chemical waste. That’s why today, I want to introduce the Hamburger-style Daniel Cell! True to […]

I’m Ken Kuwako, a Science Trainer, and every day is an experiment. When winter rolls around, we all know that sudden “Zap!” when you touch a doorknob, or the crackling sound when you pull off a sweater. These are all the work of “static electricity,” where materials build up an electrical charge. Today, I’m going […]

I’m Ken Kuwako, Science Trainer. Every Day is an Experiment. Smartphones, game consoles, TV remotes… our lives are impossible without batteries, right? But have you ever stopped to think about how batteries actually generate electricity? The truth is, anyone can easily make a battery with just two different types of metal and “a certain liquid.” […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Have you ever reached for a doorknob on a dry winter day and felt that sudden, painful “ZAP!”? That tiny spark is actually a phenomenon called “electrical discharge,” where electricity jumps across the gap between your finger and the knob. What’s truly astonishing is […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Why does an iron nail rust, but a gold ring keeps its shine forever? How can a simple combination of metals in a battery generate electricity? The secret lies in the metals’ strong desire to become “Ions!“—in other words, their “Tendency to Form Ions.” […]