Find out what the difference is between a conductor and an insulator. Physical processes - Electricity and magnetism - Conductors and dangers of electricity Learning Points Conductors are materials that allow the flow of electricity. Insulators are materials that resist the flow of electricity. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.