During a school-to-life（语境补充词）/school-to-life/ research task, Mina's group received a case with records from several years and places. The first（第一）/fərst/ evidence board connected according to（根据）/əˈkɔːdɪŋ tuː/, africa（非洲）/ˈæfrɪkɑ/, african（非洲的；非洲人）/ˈæfrɪkɑn/, agreement（协议；一致）/əˈgrimənt/, america（美国；美洲）/əˈmɛrɪkə/, american（美国的；美国人）/əˈmɛrɪkən/, april（四月）/ˈeɪprəl/, asia（亚洲）/ˈeɪʒə/, asian（亚洲的；亚洲人）/ˈeɪʒən/, august（八月）/ˈɔgəst/, australia（澳大利亚）/ɔˈstreɪljə/, australian（澳大利亚的；澳大利亚人）/ɔˈstreɪljən/, bored（感到无聊的）/bɔːd/, and britain（英国）/ˈbrɪtən/. Each item had a date, source, or witness, so the students could check why it mattered. The team has already reviewed the complete plan.
A second folder added british（英国的；英国人）/ˈbrɪtɪʃ/, canada（加拿大）/ˈkænədə/, canadian（加拿大的；加拿大人）/kəˈneɪdiən/, certainly（当然；无疑）/ˈsərtənli/, coal（煤）/koʊl/, communication（交流；通信）/kəmˌjunəˈkeɪʃən/, competition（比赛；竞争）/ˌkɑmpəˈtɪʃən/, crayon（蜡笔）/kreɪɑn/, december（十二月）/dɪˈsɛmbər/, decision（决定）/dɪˈsɪʒn/, development（发展）/dɪˈvɛləpmənt/, difficulty（困难）/ˈdɪfɪˌkəlti/, direction（方向；指示）/dəˈrekʃnz/, and discovery（发现）/dɪˈskʌvəri/. The entries did not all support the same explanation. The group separated direct facts from comments, compared the order of events, and marked information that still needed confirmation（证实、证明）/.kɒnfә'meiʃәn/. The final choice was explained to everyone at the meeting.
The most difficult board included discussion（讨论）/dɪˈskʌʃn/, eastern（东方的）/'i:stәn/, eight（八）/eɪt/, eighteen（十八）/ˈeɪˈtin/, eighth（第八）/eɪθ/, eighty（八十）/ˈeɪti/, eleven（十一）/ˈilɛvən/, england（英格兰）/ˈɪŋglənd/, europe（欧洲）/ˈjʊrəp/, european（欧洲的；欧洲人）/ˌjʊrəˈpiən/, february（二月）/ˈfɛbruˌɛri/, fifteen（十五）/ˈfɪfˈtin/, fifth（第五）/fɪθ/, and fifty（五十）/ˈfɪfti/. Some details looked familiar but carried a different meaning in this case. Mina, who led（lead的过去式和过去分词）/led/ the discussion, asked for clear evidence. The supervisor（管理者、监督者）/.sju:pә'vaizә/ replied, “A useful answer must explain the awkward clue as well as the easy one.”
The final set brought together finally（最后）/ˈfaɪnəli/, first, fisherman（渔民）/ˈfɪʃərˌmæn/, five（五）/faɪv/, forty（四十）/ˈfɔrti/, four（四）/fɔr/, fourteen（十四）/ˌfɔrˈtin/, fourth（第四）/fɔrθ/, france（法国）/fræns/, french（法国的；法语）/frɛnʧ/, friday（星期五）/ˈfraɪdeɪ/, german（德国的；德语）/ˈʤərmən/, germany（德国）/ˈʤərməni/, and granddaughter（孙女；外孙女）/ˈgrænˌdɔtər/. The students checked every label, removed two repeated claims, and wrote（写下）/roʊt/ a reason beside each change. If the first method fails, we can try another one. This rule let them correct the record without hiding uncertainty（不确定、不可靠）/.ʌn'sә:tnti/ or blaming a teammate（队友）/'ti:mmeit/.
They would carry out（开展；执行）/ˈkɛri aʊt/ a careful review before they could draw a conclusion（得出结论）/drɔ ə kənˈkluʒən/. The answer must be based on（以……为依据）/bi beɪst ɔn/ evidence. Everyone would have access to（有机会使用；可获取）/hæv ˈækˌsɛs tɪ/ the same file, focus on（集中于）/ˈfoʊkɪs ɔn/ the task, and refer to（查阅；提到）/rɪˈfər tɪ/ original notes. In contrast（相比之下）/ɪn ˈkɑntræst/, guesses would be rejected; in addition（此外）/ɪn əˈdɪʃən/, every change needed a reason. The finished report turned a crowded collection into a clear decision. It showed which evidence was strong, which detail needed further checking, and what action should happen next. The group could defend its result because every important word appeared in a real, checkable（语境补充词）/checkable/ context.