I’m Ken Kuwako, your Science Trainer. Every day is an experiment! Have you ever seen what happens when a child gently drops a long plastic spring, or Slinky, from the top of a staircase? Instead of simply tumbling down, the spring slowly works its way down the stairs, one step at a time, almost as […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Do you know what soap is made from? Believe it or not, it starts with something as familiar as cooking oil. And even more surprisingly, the process involves the very same kind of chemical reaction that helps us clean greasy stains in our everyday […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. This time, let’s take a look at an experiment on Hooke’s law and how to carry it out. Together with your students, let’s uncover the physical laws hiding behind this simple phenomenon. In this experiment, students hang a 10 g weight from a spring […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment! When your child gets a nosebleed, those bloodstains can be surprisingly stubborn. Even after washing, they often refuse to disappear. So this time, I decided to put sodium percarbonate to the test and see whether this powder could really get rid of those stubborn […]

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. Have you ever looked through a microscope and thought, “Wow, that’s beautiful!”—only to grab your smartphone for a quick snapshot and find that the focus just won’t cooperate? If you’ve ever had that frustrating experience during a science class or while working on a […]