Now you can have Logos School's Jim Nance teach your children (or you!) Introductory Logic. Jim's eight years of teaching Logic have made him very proficient at the subject. The 20-lesson DVD set follows the lessons in the Introductory Logic textbook which Jim co-authored with Douglas Wilson, and also includes Venn diagrams and translations from hypothetical to categorical syllogisms. 20 lessons on three DVDs. Grades 8 and up.