Building simple circuits with copper tape, LED bulbs, resistors, and watch batteries is not as simple as you might think. Notre Dame Elementary School STEM students are putting the engineering design ...

Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch step-by-step as we cut lemons, prepare copper and aluminum electrodes, and ...

It may sound odd, but a home-brewed marker generator can be useful in many situations. Let us see how to make one with a simple circuit. To understand exactly what a marker generator (often with a ...