Lesson 15 of Minna no Nihongo I introduces beginners to vocabulary related to shopping, prices, and common items found in stores. This lesson helps learners ask about prices, identify items, and engage in polite shopping conversations. Key vocabulary includes words and expressions such as βγγγ (ikura) β how much,β βγγ (kore) β this,β βγγ (sore) β that,β βγγ (are) β that over there,β βγ»γ (hon) β book,β βγγγγ (shashin) β photograph,β βγγ€ (kutsu) β shoes,β βγγγΎ (kuruma) β car,β βγγ°γ (kaban) β bag,β βγ«γ‘γ© (kamera) β camera,β βγ«γγγγ (ningyou) β doll,β βγ―γ€γ³ (wain) β wine,β βγγγ (okane) β moneyβ and other common shopping items. The lesson also emphasizes using demonstratives, polite forms, and expressions for asking and giving prices. Strategies for mastering Lesson 15 vocabulary include flashcards, repetition, practicing dialogues in shopping scenarios, role-playing store interactions, and using items in sentences, which help learners retain the words and use them effectively. Practicing this vocabulary allows learners to ask about prices, identify products, and navigate common shopping situations confidently. Lesson 15 vocabulary builds practical skills for everyday transactions and supports learners in communicating politely in stores and markets in Minna no Nihongo I.