The Chemistry: The Complete Course Series teaches students the quantitative reasoning skills they'll need to solve chemistry problems. The 30 (sold-separately) volumes cover all aspects of chemistry, from density to the mole to stoichiometry, and demonstrate how to ask meaningful questions and conduct careful investigations. This volume teaches students how to use quantitative reasoning to solve chemistry problems and how to clearly explain how to reason out the answer to a problem. Grades 9-Adult. 30 minutes on DVD.