A very good way to introduce children to electronics might be the electric dough. We will do with the smaller ones, electric dough such as electro dough which we already used many times and is tones of fun. According to wire we can make our own so the possibilities are endless; here is the recipe:
1// Make the insulating dough
Mix 1½ cups flour, ½ cup sugar, 3 Tbsp. vegetable oil, ½ cup distilled water, and food dye in a medium-size bowl. Stir until doughy. Turn out onto a flour-coated surface and knead.
2// Cook the conductive dough
Mix 1½ cups flour, ¼ cup salt, 1 Tbsp. vegetable oil, 1 cup tap water, food dye, and 3 Tbsp. cream of tartar in a pot over medium heat. Stir constantly until the dough thickens. Lay out on a floured surface to cool. (Keep small fingers away—it’ll be hot.)
3// Complete the circuit
Sandwich a piece of insulating dough between two balls of conductive dough. Insert the terminals of a DC power supply (one that takes two AAs or four AAAs, available at electronics shops) into each conductive piece and join them with an LED. Let there be light!