.05).Incidental vocabulary acquisitionWith regard to the vocabulary acquisition, VKS sheets was adopted to measurestudnets’ invidental vocdabulary gains. According to the five levels of response ofeach target word, different scores would be given (from 0~4 scores for each wordcategory). Ten target words in total resulted in 40 scores as the full remark. To beginwith, the statistical table was presented below.Group StatisticsdictionaryMeanStd. DeviationStd. Error Mean1.003219.87509.195901.625622.00VocabularyN3214.65637.901041.39672Table 3. Group Statistics on the vocabulary acquisition task.As mentioned before, dictionary 1 represents the EPD group while dictionary 2stands for the PD group. Judging from Table 3, the EPD group outperformed the PDgroup in incidental vocabulary acquisition task (19.87 vs. 14.65). As to whether thegap really made a significant difference, an independent samples t-test was applied.Table 4 presents its findings.Independent Samples TestsVocabularyt-test for Equality of Means248]]> r ,直線與圓相離(2) 當 AO = r ,直線與圓相切(3) 當 AO < r ,直線與圓相割課本例題 1、試討論圓 C : x 2 + y 2 − 4 x + 2 y − 4 = 0 與下列各直線的關係L1 : 4 x + 3 y − 20 = 0 、 L2 : 4 x + 3 y + 5 = 0 、 L3 : 4 x + 3 y + 15 = 0369]]>http://ebook.slhs.tp.edu.tw/books/slhs/8/歷年行動研究彙編第3冊