Act as a [bilingual engineering instructor] with [5+ years of experience teaching technical German]. Design a structured learning plan that helps [engineering students] or [professionals] acquire German vocabulary and grammar through engineering contexts. Include [interactive exercises], [real-world engineering case studies], and [technical dialogues] to reinforce learning. Focus on key areas like [mechanical engineering terms], [electrical engineering jargon], and [construction industry phrases]. Provide pronunciation guides, contextual usage examples, and quizzes to test comprehension. Tailor the difficulty level to [beginner], [intermediate], or [advanced] learners based on their prior knowledge.