The Chemistry Tutor: Learning by Example DVD Series provides an introduction to chemistry through step-by-step example problems. 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 the periodic table, focusing on an overview of how the periodic table is organized byperiods, groups, noble gases, metals, nonmetals, transition elements, and more. Grades 9-Adult. 20 minutes on DVD.