2.一點光源S的位置如圖所示，左邊為平面鏡，觀察者位於P處，望向折射率為1.5，厚度為d的長方體透明玻璃磚，觀察者觀察到的S 像，可能會位於哪二個位置？

II. Essay Question Read the following passage and write more than 300 words about the following topic: The (In)Effectiveness of Using Mobile Technologies to Enhance Language Learning. Based on your teaching experience and classroom observation, to what extent can language teachers integrate digital gadgets to enhance students’self-regulatory ability, intrinsic motivation and learner agency? What might be the challenges or constraints high school students may encounter in Taiwan?The growing availability of mobile technologies has contributed to an increase in mobile-assisted language learning in which learners can autonomously study a second language (L2) anytime or anywhere. Research investigating the effectiveness of such study for L2 learning, however, has been limited, especially regarding large-scale commercial L2 learning apps, such as Duolingo. Although one commissioned research study found favorable language learning outcomes, limited independent research has reported issues related to learner persistence, motivation, and program efficacy. The current study investigates the semester-long learning experiences and results of nine participants learning Turkish on Duolingo. The participants showed improvement on L2 measures at the end of the study, and results indicate a positive,moderate correlation between the amount of time spent on Duolingo and learning gains. In terms of perceptions of their experiences, the participants generally viewed Duolingo’s flexibility and gamification aspects positively; however, variability in motivation to study and frustration with instructional materials were also expressed.

2.一點光源S的位置如圖所示，左邊為平面鏡，觀察者位於P處，望向折射率為1.5，厚度為d的長方體透明玻璃磚，觀察者觀察到的S 像，可能會位於哪二個位置？

相關申論題

相關試卷

2.一點光源S的位置如圖所示，左邊為平面鏡，觀察者位於P處，望 向折射率為1.5，厚度為d的長方體透明玻璃磚，觀察者觀察到的S 像，可能會位於哪二個位置？

相關申論題

相關試卷

2.一點光源S的位置如圖所示，左邊為平面鏡，觀察者位於P處，望向折射率為1.5，厚度為d的長方體透明玻璃磚，觀察者觀察到的S 像，可能會位於哪二個位置？