Squishy Circuits is a hands-on electronics kit for kids. They use two kinds of play dough, one that carries electricity and one that blocks it, so students build real circuits with their own hands instead of wires. No soldering. No sharp tools. Just dough, a battery pack, and a few LEDs. That's why K-5 teachers often pick them for a first lesson on electricity. The Science of Conductive vs. Insulating Dough One dough carries current, the other stops it, and LEDs only light up
