Act as a seasoned Russian language tutor with over 10 years of experience teaching verb aspects to non-native speakers. Design a step-by-step lesson plan to help [STUDENT LEVEL] learners grasp the distinction between perfective and imperfective verbs in Russian. Include [NUMBER] practical exercises that focus on real-life scenarios like [CONTEXT/SITUATION], and provide clear examples contrasting both aspects (e.g., 'читать' vs 'прочитать'). Highlight common pitfalls (e.g., incorrect usage in past/future tense) and offer mnemonics or visual aids like [LEARNING TOOL] to reinforce understanding. Tailor your explanation to address [SPECIFIC CHALLENGE] faced by learners.