本研究旨在依據 Ennis批判思考的理論架構，編寫十二單元的批判思考教學活動設計，配合國中家政科教學，來啟發、增進國中學生批判思考能力。經由十二週實驗教學活動，驗證家政科批判思考教學活動設計對國中學生批判思考能力之影響，作為日後國中推廣批判思考教學之參考。本研究樣本取自敦化國中一年級學生，共計164 名，其中實驗組83名，控制組81名。以「康乃爾批判思考測X 級」及「問題解決測驗」為評量工具，所得資料以單因子共變數分析、t 考驗及皮爾遜積差相關進行統計處理，以考驗教學效果，並探討批判思考測與學業成就的相關性。主要結果發現：一、家政科批判思考教學活動設計，對實驗組學生批判思考能力之增進，有顯著效果。經過十二週批判思考教學後，發現實驗組學生在批判思考測驗總分及歸納、演繹、考察訊息的可信度，均顯著優於控制組；唯在確認假設此分測驗，發現實驗組與控制組無顯著差異。二、家政科批判思考教學活動設計，對實驗組學生問題解決能力之增進，有顯著效果。經過十二週批判思考教學後，發現實驗組學生在問題解決測驗總分及解釋推論、猜測原因、逆向猜測原因、預防問題等分測驗得分，均顯著優於控制組。唯在決定解決方法此分測驗，發現實驗組與控制組無顯著差異。三、批判思考能力與學業成就表現，有顯著正相關。經過十二週批判思考教學後，發現實驗組的批判思考分數與學業成就的分數，有顯著正相關。

The purpose of this study is to design a 12-unit teaching program on critical thinking based on the theoretical framework of Ennis critical thinking,to go with the teaching of home economics at junior high schools , with the hope of developing and enhancing students' critical thinking ability. The effects of the program of critical thinking teaching in home economics on junior high school students' critical thinking abilities are evaluated after a 12-week experimental teaching program , and then the results are suggested to serve as references for promoting critical teaching at junior high schools in the future. The subjects in this study, totaling 164 students, were first-graders at Dwun Hwa junior High School （Taipei）, among which, 83 were grouped in Experiment Team,and the rest 81, Controlling Team. Cornell Critical Thinking Level X and Problem Solving Test are used as testing tools. The results are analyzed through one-way analysis of co-variance and processed statistically by t-test and K.Pearson product-moment correlation to evaluate the teaching effects as well as to explore the correlation between critical thinking test and academic achievements. The major results are as follows： 1.Critical thinking teaching in home economics significantly improves the critical thinking ability of students in the Experiment Team. It is found that after the 12-week critical thinking Experiment, the students in the Experiment Team are significantly superior to those in the Controlling Team in terms of total test scores on Critical Thinking Test , and the scores in the sub-tests on induction and deduction abilities,and information credibility investigation.However, no significant difference is found between the two on the sub-test of hypothesis confirmation. 2.Critical thinking teaching in home economics significantly improves the problem solving ability of the students in the Experiment Team. After the 12-week critical thinking teaching Experment,the students in the Experment Team are significantly superior to those in the Controlling Team in terms of total test scores on the problem Solving Test , and the sub-tests on explaining inferences , determining causes, negative why question and avoiding problems . However , no significant difference is found between the two teams in terms of determining solution. 3.A significant positive correlation is found between critical thinking ability and academic achievement. After the 12-week critical thinking teaching experiment, significant correlation is found between the critical thinking scores and the academic achievement scores of the students in the Experiment Team. 4.For the students in the Experiment Team, the differences between on the Critical Thinking the pre-test and post-test forthe critical thinking teaching experiment, evaluated by t-test , reveal remarkable improvement shown in the total scores and sub-tests scores of the low-score and medium- score teams.However,for the high-score teams,the sub-test scores reveal that only the information credibility investigation ability improves significantly ; the improvements in total scores , induction and deduction abilities,and hypothesis confirmation are not remarkable. 5.For the students in the Experiment Team,the differences between on Problem Solving the pre-test and post-test for the critical thinking teaching experiment,eualuated by t Test,showed significantly improvement in the total scores and sub-test scores of the low-score , medium-score teams, and high-score teams. It is suggested that the above findings serve as references for the application of home economics teaching at junior high schools as well as further research in the future.Ⅰ.Suggestions for home economics education at junior high schools 1.set up critical teaching centers for home economics education at junior high schools; 2.provide teachers of home economics at junior high schools with opportunities to study critical thinking teaching; 3.include critical thinking teaching materials in new curricula ; 4.home economics teachers at junior high schools may adapt cooperative learning method to carry out critical thinking teaching; 5.teachers using critical thinking teaching in home economics should skillfully use the feed-back technique; 6.topics in everyday life are recommended in selecting teaching materials for critical thinking teaching in home economics.Ⅱ.Suggestions for future research 1.while carrying out experimental teaching research on critical teaching,the arrangement of the seating of students should be based on the principle of developing students' multi-way communication; 2.Computer-Assisted Instruction may be included when applying the experimental teaching strategies of critical thinking; 3.the homogeneity between materials and the testing tools should be considered carefully in the study of experimental teaching of critical thinking; 4.further studies on the experimental teaching of criticalthinking at senior high schools should be carried out.