Maya's class received a notice（通知；注意到）/ˈnəʊtɪs/ for the school（学校）/skuːl/ open（开放的；打开）/ˈəʊpən/ day（一天；白天）/deɪ/. Ms Chen explained, “More than（超过；不仅仅）/mɔː ðæn/ two hundred guests（客人；访客）/ɡest/ will arrive（到达）/əˈraɪv/ on Saturday, but this map（地图）/mæp/ is no longer（不再）/nəʊ ˈlɒŋɡə/ correct（正确的）/kəˈrekt/.” Leo added, “A new building（建筑物）/ˈbɪldɪŋ/ blocked（阻挡；街区）/blɒkt/ one path（小路；路径）/pɑːθ/, and the science（科学）/ˈsaɪəns/ room（房间）/ruːm/ moved to another area（区域）/ˈeəriə/.” Ms Chen continued（继续）/kənˈtɪnjuː/, “Your project（项目）/ˈprɒdʒekt/: create a safe（安全的；安全地）/seɪf/ way（道路；方式）/weɪ/, prepare（准备）/prɪˈpeə/ useful（有用的）/ˈjuːsfəl/ information（信息）/ˌɪnfəˈmeɪʃn/, and guide（引导；指南）/ɡaɪd/ guests from the gate（大门）/ɡeɪt/ to the central（中心的）/ˈsentrəl/ hall（大厅）/hɔːl/.”

On campus（校园）/ˈkæmpəs/, Leo recorded（记录）/rɪˈkɔːdɪd/ each corner（转角）/ˈkɔːnə/ while Maya described（描述）/dɪˈskraɪbd/ the map. They discovered（发现）/dɪˈskʌvəd/ that the shortest（最短的）/ˈʃɔːtɪst/ route（路线）/ruːt/ went past（经过；超过）/pɑːst/ the library（图书馆）/ˈlaɪbrəri/ and across a narrow（狭窄的）/ˈnærəʊ/ bridge（桥）/brɪdʒ/. Maya said, “It looks simple, but a large group（人群；小组）/ɡruːp/ cannot pass safely.” Leo warned（提醒；警告）/wɔːnd/, “If rain（雨；下雨）/reɪn/ caused（导致；原因）/kɔːzd/ the ground（地面）/ɡraʊnd/ to become wet, someone might fall.” “Then let us avoid（避免）/əˈvɔɪd/ it instead of（而不是）/ɪnˈsted əv/ taking the easiest（最容易的）/ˈiːziɪst/ choice（选择）/tʃɔɪs/.” They agreed（同意）/əˈɡriːd/.

Their second plan（计划）/plæn/ included（包括）/ɪnˈkluːdɪd/ a wider（更宽的）/ˈwaɪdə/ road（道路）/rəʊd/, but it reached（到达）/riːtʃ/ long steps（台阶；脚步）/steps/, so guests in wheelchairs（轮椅）/ˈwiːltʃeəz/ could not continue. A local（当地的）/ˈləʊkl/ volunteer（志愿者）/ˌvɒlənˈtɪə/ suggested（建议）/səˈdʒestɪd/ another way. “Why not use the art building lift（电梯；抬起）/lɪft/?” Ms Chen replied, “Good idea, but only a teacher（教师）/ˈtiːtʃə/ can operate（操作；运转）/ˈɒpəreɪt/ the lift.” Ms Chen accepted（接受）/əkˈseptɪd/ it and offered（提出；提供）/ˈɒfəd/ a teacher.

By Thursday, colored（彩色的）/ˈkʌləd/ signs（标牌；标志）/saɪnz/ connected（连接）/kəˈnektɪd/ the main places. Leo explained, “Green signs point ahead（向前）/əˈhed/ to classrooms（教室）/ˈklɑːsruːmz/, blue signs introduce（介绍）/ˌɪntrəˈdjuːs/ public（公共的）/ˈpʌblɪk/ areas, and orange（橙色的；橙子）/ˈɒrɪndʒ/ signs warn about safety（安全）/ˈseɪfti/.” Maya added, “We also need a quiet（安静的）/ˈkwaɪət/ room for anyone who wants a break（休息；打破）/breɪk/.” The map not only showed where to go but also explained why one route was safer than another.

The printer（打印机）/ˈprɪntə/ cancelled（取消）/ˈkænsəld/ their order（订单；命令）/ˈɔːdə/; everyone appeared（显得；出现）/əˈpɪəd/ worried（担心的）/ˈwʌrid/. Maya said, “We cannot afford（承担得起）/əˈfɔːd/ to wait until Friday afternoon. Let us divide（分开；划分）/dɪˈvaɪd/ the map into four pages（页）/ˈpeɪdʒɪz/.” Maya advised（建议）/ədˈvaɪzd/ the group to follow that plan. Leo offered, “I will borrow（借入）/ˈbɒrəʊd/ a printer from history（历史）/ˈhɪstəri/ club.” Leo borrowed it. Two classmates（同班同学）/ˈklɑːsmeɪts/ carried（搬运）/ˈkærid/ the pages to the gate. Working at the same time（同时）/æt ðə seɪm taɪm/, they managed（设法完成）/ˈmænɪdʒd/ to complete（完成）/kəmˈpliːt/ the job before the final（最后的）/ˈfaɪnəl/ bell（铃；钟声）/bel/.

An elderly（年长的）/ˈeldəli/ guest stopped（停下）/stɒpt/ at our desk（桌台；书桌）/desk/. “I want to reach the music（音乐）/ˈmjuːzɪk/ room, but I cannot read the building numbers（号码；数字）/ˈnʌmbəz/.” Maya replied, “I can use the map to explain the route and walk with you to the correct door.” “Thank you. These signs make me feel welcome（受欢迎的；欢迎）/ˈwelkəm/ rather than（而不是）/ˈrɑːðə ðæn/ lost（迷路的；丢失的）/lɒst/.”

The event（活动；事件）/ɪˈvent/ also taught（教；使明白）/tɔːt/ them about design（设计）/dɪˈzaɪn/. Ms Chen concluded（总结；得出结论）/kənˈkluːdɪd/, “Good design begins（开始）/bɪˈɡɪnz/ when we consider（考虑）/kənˈsɪdə/ different people, notice a problem, and solve（解决）/sɒlv/ it before it happens（发生）/ˈhæpənz/.” Maya added, “Our route was not the shortest, but it protected（保护）/prəˈtektɪd/ guests and allowed（允许）/əˈlaʊd/ everyone to take part in（参加）/teɪk pɑːt ɪn/ it. We were proud（自豪的）/praʊd/ to achieve（实现）/əˈtʃiːv/ that result（结果）/rɪˈzʌlt/.”