The skills required to safely pilot a plane are distilled down to only the basic necessities. Using slides, an overhead projector and the ubiquitous model airplanes the instructor explains how to control the aircraft. Correct terminology isn't stressed, everyday language is often used to convey the information. Whatever works for the students. Control inputs and results are often related to driving a car and riding a bicycle.
Every effort is made to keep it as simple as possible.
The second half of the ground school deals with radio navigation and emergency communications and airport arrival. Amazing as it sounds, they manage to make VOR navigation understandable and practical in one short session. The emergency frequencies are planted firmly and permanently into the heads of the Pinch-Hitters. Practical communications are stressed. ASF provides a checklist for the Pinch Hitter, which I have modified slightly for my own use.