2010年6月28日
[新聞]電腦使用不當 孩子成績直降
根據英國《每日電訊報》報導,學童每天使用電腦好幾個小時,多數時間都花在社交網站與電玩遊戲上。研究結果指出,普及家用電腦的計劃,擴大了優勢與弱勢學生分數差距的鴻溝。
英國有高達9成中學生利用電腦完成家庭作業,就在今年初,工黨允諾採購27萬台筆電,發送給弱勢家庭的學生。最新研究卻發現,貧困家庭的學童擁有電腦後,數學與閱讀考試成績開始變得「一塌糊塗」。
研究案的作者之一雅克.維克得(Jacob Vigdor)說:「成年人或許認為電腦科技是有生產力的工具,但一般兒童並不這麼想。」
這份研究比較了2000年至2005年間,將兒童的電腦使用習慣與考試成績進行對照比較。這段期間正好是寬頻網路迅速擴張的時期,到了2005年,寬頻網路幾乎成為每個領域的研究顯學,在美國吸引了15萬名學童的高度興趣。
研究員比較了相同兒童使用電腦前後的閱讀與數學分數,發現電腦對數學與閱讀測驗分數有著「顯著和持續的負面影響」。
這項調查於2005年停止,正是社群網站Facebook崛起之前。學者指出,這將進一步影響兒童成績表現。
維克得說:「我們在2005年中斷了調查,研究中未涉入Facebook或Twitter的世代。當時科技簡單多了,此後線上的即時通訊軟體更加普及,一個接著一個,讓人眼花撩亂。」
另一名共同作者海倫.拉德(Helen Ladd)表示,多數中學生將電腦當作社交和遊戲工具。
研究員下了結論,唯有家長從旁監控,電腦才能發揮最有效益的運用,但是,在經濟相對弱勢的家庭中,家長不大可能檢查孩子的電腦使用行為,提供教育方針。
英國克蘭菲爾德管理學院教授表示,網路與手機會逐漸損害學童獨立學習的能力,也會導致語言辭彙的貧乏,後續影響值得重視。
http://tw.news.yahoo.com/article/url/d/a/100628/131/288gf.html
2010年2月19日
2009年11月25日
LEGO Digital Designer
2009年9月27日
PhET Interactive Simulations
PhET Interactive Simulations is an ongoing effort to provide an extensive suite of simulations to improve the way that physics, chemistry, biology, earth science and math are taught and learned. The simulations are interactive tools that enable students to make connections between real life phenomena and the underlying science which explains such phenomena. Our team of scientists, software engineers and science educators use a research-based approach– incorporating findings from prior research and our own testing – to create simulations that support student engagement with and understanding of scientific concepts.
In order to help students visually comprehend thse concepts, PhET simulations animate what is invisible to the eye through the use of graphics and intuitive controls such as click-and-drag manipulation, sliders and radio buttons. In order to further encourage quantitative exploration, the simulations also offer measurement instruments including rulers, stop-watchs, voltmeters and thermometers. As the user manipulates these interactive tools, responses are immediately animated thus effectively illustrating cause-and-effects relationships as well as multiple linked representations (motion of the objects, graphs, number readouts, etc…).
To ensure eduational effectiveness and usability, all of the simulations are extensively tested and evaluated. These tests include student interviews in addition to actual utilization of the simulations in a variety of settings, including lectures, group work, homework and lab work. Ourrating system indicates what level of testing has been completed on each simulation.
All PhET simulations are freely available from the PhET website and are easy to use and incorpate into the classroom. They are written in Java and Flash, and can be run using a standard web browser as long as Flash and Java are installed.
