We carried out an exciting science investigation to find out which everyday materials are conductors and which are insulators. The children tested paper, paper clips, pencils, pencil sharpeners, staples, rubbers, and rulers by adding them to a simple electrical circuit. They carefully observed which materials allowed the electricity to flow and which stopped it. The children proudly discovered that materials needed to be made of metal to be conductors, while the non-metal objects acted as insulators.