The Physics 3 Tutor (Electricity & Magnetism): Learning By Example DVD Series teaches students about physics through example problems that progressively grow more difficult. Emphasis is placed on giving students confidence in their skills by gradual repetition so that the skills learned are committed to long term memory. This episode covers Gauss' Law with Spherical Symmetry, including when Spherical Symmetry can be applied to Gauss' Law problems to make them easier to solve. Grades 9-College. 32 minutes on DVD.