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 […]

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? […]

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 […]

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, […]

This article is also available as a podcast! Watch the video explanation with slides. A watter rocket ( a small plastic bottle rocket ) is a perfect hands-on project for summer vacation science experiments—and one I highly recommend trying at least once. You can discover all sorts of fascinating things, like how changing the amount […]