Welcome to the Calc Medic AP Calculus AB course! Here you will find Experience First, Formalize Later (EFFL) lessons for every topic of the College Board’s Course and Exam Description (CED) for Calc AB, as well as review activities to prepare for the AP Calculus Exam. In the EFFL model, students work in small groups on an engaging activity to build conceptual understanding, followed by a whole-class debrief where the teacher formalizes the learning.