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? […]
No Oscilloscope? No Problem! Class Ideas for Visualizing Sound with Scratch and Free Tools Have you ever wanted to show students the volume or waveform of sound in a science class but found that professional oscilloscopes are just too expensive and complicated to use? Teaching students how to operate them can be a hassle, making […]
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 […]