Foundations of the third declension (what "consonant-stem" means, finding the stem from the genitive, the bare endings, and the square of stops), Step 1/2/3 derivation of σάρξ, the four major patterns (σάρξ · αἰών · πνεῦμα · βασιλεύς) compared in one grid, a 5-step parsing workflow with worked examples, the six common 3rd-decl patterns (mute, liquid, -μα, -εύς, -ις/-εως, -ος/-ους), tough irregulars (γυνή, χείρ), the Lesson 7 vocabulary of 23 third-declension nouns, and translation practice on NT-style phrases. Unlock each subtopic by scoring at least 90% on its mastery check.