I’m Ken Kuwako, a Science Trainer. Every day is an experiment. The Great Ball Float-or-Sink Challenge! For this challenge, we’ve gathered four types of balls: a golf ball, a lacrosse ball, a rubber baseball, and a bowling ball. Now, which of these do you think will float in water? Make your prediction in your head. […]

Ken Kuwako, Science Trainer. Every Day is an Experiment! A single sheet of paper suddenly “boings!” into the air, as if it has a life of its own. It’s the “Origami Frog,” a paper toy almost everyone has made at least once as a child. I recently made one again, this time with my own […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. The Van de Graaff Static Electricity Experiment: How Does an Empty Can Move? That sharp, painful zap! of static electricity is a common experience, especially on doorknobs in winter. But have you heard of a device called a “Van de Graaff generator”? It can […]

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 […]