慢性非萎缩性胃炎吃什么药| 台卡是什么| slf是什么意思| 老人流口水是什么原因引起的| 鲤鱼喜欢吃什么食物| 乳头痛什么原因| 6月22日什么星座| 早孕什么意思| 囊壁钙化是什么意思| 鼻炎挂什么科| 2月18号是什么星座| 观音菩萨原名叫什么名| pp是什么意思| 奋不顾身的顾是什么意思| 孕妇吃什么坚果比较好| 宫腔积液吃什么药效果最好| 阴虚火旺是什么意思| 什么是心肌炎| 三加一是什么意思| surprise什么意思| 八月二十是什么星座| 男生生日礼物送什么| 可定什么时间服用最好| 心身医学科是看什么病| 秋高气爽是什么意思| 游泳为什么要穿泳衣| 天官是什么意思| 胃肠紊乱吃什么药| 重度抑郁症吃什么药| 血脂稠吃什么| 拍胸片挂什么科| 阴虚血热什么症状| 丝绦是什么意思| 稷是什么作物| 鼠配什么生肖最好| 手指疣初期什么样子| 病毒性感冒吃什么药| 待字闺中是什么意思| 手冲是什么意思| 譬如是什么意思| 经期吃榴莲有什么好处和坏处| 鱼吐泡泡是什么原因| 化疗后吃什么增强免疫力| 你喜欢我什么| 什么地走路| ohs是什么意思| 吃什么都拉肚子怎么回事| 钙化是什么意思| 户口本丢了有什么危害| 大圣归来2什么时候上映| 刘亦菲是什么星座| 盐酸氟桂利嗪胶囊治什么病| 天理是什么意思| 玉米吃多了有什么坏处| 脾虚吃什么好的最快| 放电是什么意思| 糙皮病是什么病| 什么是挂科| 羊水少了对宝宝有什么影响| 高的部首是什么| 头疼头晕挂什么科| 试管婴儿是什么意思| 吃什么油对身体好| 厦门有什么区| 鸡和什么属相相冲| 品种是什么意思| 吃人参对身体有什么好处| 梦见老鼠是什么征兆| 短效避孕药什么时候吃| 三分三是什么药| 龟苓膏有什么作用| 喝什么茶养胃| 甲醛对人体有什么危害| 左行气右行血什么意思| 胰腺不舒服是什么症状| 进是什么结构| 梦见蜘蛛网是什么意思| 宫颈切片检查是什么| 菜花病是什么| 念珠菌用什么药最好| 58岁属什么| 一指什么生肖| 台湾什么时候回归| 灵芝主要治什么病| 99年属什么的| 竖中指代表什么意思| 12月25日什么星座| 什么是临床医学| 菊花和枸杞泡水喝有什么功效| 黄瓜可以和什么一起榨汁| 身份证后4位代表什么| 什么是质子重离子治疗| 何弃疗是什么意思| 跑团什么意思| 5.13是什么星座| 外阴苔癣是一种什么病| 孕妇吃什么补血| amy是什么意思| 空调病是什么| 铁剂不能与什么同服| 老犯困是什么原因| 深深是什么意思| 冥冥之中是什么意思| 亚麻是什么植物| 陈小春什么星座| 糖尿病人吃什么好| 6.8什么星座| 金银花有什么功效和作用| 阿玛尼手表属于什么档次| ros是什么意思| 男人遗精是什么原因| 圆是什么结构| 为什么一照相脸就歪了| t是什么| pms是什么意思| 菠萝和什么不能一起吃| 10月份是什么星座| 淋巴细胞数偏高是什么意思| 血液发黑是什么原因| 女生排卵是什么意思| 世风日下什么意思| 夜尿多吃什么药效果好| 梦见摘水果是什么意思| 风寒感冒喉咙痛吃什么药| 朱元璋属什么生肖| 感冒全身酸痛吃什么药| smt什么意思| 陈坤为什么地位那么高| abo血型是什么意思| 什么的白桦| 今年十八岁属什么生肖| 生殖器是什么| 软组织挫伤用什么药| 梦见酒是什么意思| 7月14号是什么节日| 尿血什么原因| 晗字五行属什么| 青榄配什么煲汤止咳做法| 半月板损伤有什么症状| 什么是双| prada是什么品牌| 女命带驿马是什么意思| 皮肤病吃什么药最好| 霉菌性阴道炎是什么引起的| 免疫缺陷是什么意思| 什么是酸性土壤| 验孕棒什么时候测最准确| 艾迪生病是什么病| 什么人容易得心脏病| 氟化钠是什么| 读什么| 地主是什么意思| 脚老是抽筋是什么原因| 得五行属什么| 国标舞是什么舞| 腋下黑是什么原因| 胃炎吃什么最好| 吃什么容易得胆结石| 原本是什么意思| 梦到前任预示着什么| 厂与什么有关| 低血糖吃什么水果| 睡醒后口干口苦是什么原因| 什么头什么节| 细胞器是什么| 老鼠的尾巴有什么作用| 小资情调是什么意思| 2023年属兔的是什么命| 散佚是什么意思| 更年期是什么时候| 木加一笔变成什么字| 世界上最长的单词是什么| 吃苹果什么意思| 为什么白带是绿色| 手机代表什么生肖| 甲状腺炎吃什么药| 高寿是什么意思| 突然晕倒是什么原因| 龟是什么意思| 这是什么品牌| 属龙和什么属相相冲| 佛家思想的核心是什么| 恭送是什么意思| 无花果和什么不能一起吃| 什么人不宜吃海参| 久旱逢甘露是什么意思| 鳞状上皮内高度病变是什么意思| 扳机点是什么意思| 洗衣机什么牌子好| 血色素低吃什么补得快| 睡着后抽搐抖动是什么| 什么袍加身| 扁桃体切除有什么影响| 口苦吃什么好得快| 分解酒精的是什么酶| 窦性心动过缓吃什么药| 女人什么眉毛最有福气| 鱼翅是什么东西| 喝陈皮水有什么好处| 饭中吃药是什么时候吃| 红米有什么功效和作用| 喝什么茶好| 榆木脑袋是什么意思| 叕怎么读音是什么意思| 阳性血是什么意思| 打嗝是什么引起的| 肠系膜淋巴结炎吃什么药最有效| 马克定食是什么意思| browser什么意思| 派石项链有什么功效| 本科专科有什么区别| 花椒泡脚有什么好处| 与什么隔什么| 为什么女人比男人长寿| fed是什么意思| 胎盘1级什么意思| 什么时候跑步减肥效果最好| 植树节什么时候| 上海最高的楼叫什么| 开放性骨折是什么意思| 易胖体质是什么原因造成的| browser什么意思| shuuemura是什么牌子| 狐臭挂什么科室的号| 孕妇梦见棺材是什么征兆| 放河灯是什么节日| 人格的核心是什么| 车水马龙是什么意思| 两鬓长白发是什么原因| 谷草转氨酶偏高是什么原因| 西铁城手表属于什么档次| 低压高什么原因| 肠管积气是什么原因| 缝纫机油是什么油| 什么时间喝酸奶最好| 子母被是什么意思| 九月初四是什么星座| 菊花茶和枸杞一起泡水有什么好处| 类风湿因子高说明什么| 什么是葡萄糖| 正月初七什么星座| 坐镇是什么意思| 咳嗽吃什么药| 淡紫色配什么颜色好看| 琨字五行属什么| 线粒体是什么| 6月11号是什么星座| 忐忑不安是什么意思| 阶级是什么意思| 寒气和湿气有什么区别| 夏天床上铺什么凉快| 三文鱼刺身是什么意思| 武松的绰号是什么| 出汗是什么原因| herry是什么意思| 早上6点到7点是什么时辰| 为什么男人喜欢女人的胸| 流汗有什么好处| 6541是什么药| 禁忌什么意思| 药店最怕什么样的举报| 造影检查对身体有什么伤害| 九月二十五是什么星座| 舌头裂纹是什么病| 百度Jump to content

厉害了!奥赛摘金 济南高二女生直接被保送清华

From Wikipedia, the free encyclopedia
百度 三.净值标降低杠杆问题经过平台多次风险宣传教育,投资者目前普遍比较理性,5倍以上高杠杆人数已经大幅降低,5倍以上的杠杆将是今年上半年的降杠杆重点;公司内部评估,目前净值标整体风险可控,随着不良资产的回收,净值标整体规模也会大幅度降低;另外近期将试行资产包转让,让流动性充分的客户承接资产,化解高杠杆用户的流动性难题,降低净值标的整体杠杆率,最大限度满足监管要求。

A digital textbook is a digital book or e-book intended to serve as the text for a class. Digital textbooks may also be known as e-textbooks or e-texts. Digital textbooks are a major component of technology-based education reform. They may serve as the texts for a traditional face-to-face class, an online course or degree, or massive open online courses (MOOCs). As with physical textbooks, digital textbooks can be either rented for a term or purchased for lifetime access. While accessible, digital textbooks can be downloaded, printed, or accessed online via a compatible device.[1] To access content online, users must often use a 3rd party hosting provider or "digital bookshelf" through which digital textbooks can be served.

Implementation

[edit]

There are many potential advantages to digital textbooks. They may offer lower costs, make it easier to monitor student progress, and are easier and cheaper to update when needed. Open source e-textbooks may offer the opportunity to create free, modifiable textbooks for basic subjects, or give individual teachers the opportunity to create e-texts for their own classrooms.[2] They may offer better access to quality texts in the developing world. For this reason, many schools and colleges around the world have made the implementation of digital textbooks a central component of education policy. For example, in South Korea, reading materials in all public schools will be digitized by 2015.[3] In the United States, the Federal Communications Commission aims for every student to be able to access e-texts by 2017.[4][needs update]

However, the transition to e-textbooks is costly, complex and controversial. Students express a strong preference for printed materials in many surveys and across cultures.[5][6] Many interconnected factors, from device access, to digital literacy, to teaching methods affect the implementation of digital textbooks in the classroom.[7] Issues of overall value, book quality, privacy, and intellectual property have yet to be resolved. An early 2009 study by Cleantech Group LLC also found that the emissions used to create an eBook were equivalent to 22.5 physical books, representing a significant improvement in environmental sustainability.[8] As of 2021, the largest supplier of digital textbooks is VitalSource, with over 1 million titles in its catalog.[9]

Devices

[edit]

Because digital textbooks must be accessed through an electronic device, such as a laptop or e-reader, schools and colleges must determine how to provide access to all students. Many school districts are now offering "one-to-one" technology programs, in which a tablet or laptop is issued to each student. This ensures that all of the devices meet the same requirements (such as memory or software) and that all the devices can be networked, monitored and upgraded together. However, the one-to-one model also imposes significant costs on school districts, and brings up issues of privacy and personal use.

An alternative to one-to-one is to ask students to use their own electronic devices in class. This is called Bring Your Own Device (BYOD) or, sometimes, Bring Your Own Technology (BYOT). BYOD allows students to choose their preferred device for studying. Compared to one-to-one, it decreases the technology and maintenance costs for institutions. But not all students' devices may be compatible with the digital textbooks required for a class, and the devices may not be able to network with each other. A BYOD approach may also count out students who cannot afford a computer, e-reader or smartphone.

Interactivity

[edit]

A major selling point of digital textbooks is that they offer the opportunity for students to access multimedia content, such as embedded videos, interactive presentations and hyperlinks. Tests and other assessments can be included in the textbook, classmates can work together, and student progress can be tracked. Touchscreen technology offers students the chance to participate in projects, research or experiments. This may offer a different or better learning experience than printed textbooks. Digitization also promises to offer improved access to textbooks for students with disabilities.[10] For example, high-contrast displays, or text-to-speech programs can help visually impaired students use the same textbooks their classmates use. The creation of interactive and customizable content is an important part of digital textbook development. Interactive digital content is costly to produce, however, and research on learning outcomes is still in the preliminary stages.

Open vs. closed

[edit]

The concepts of open access and open source support the idea of open textbooks, digital textbooks that are free (gratis) and easy to distribute, modify and update (libre). Schools, teachers or professors may design their own open textbooks by gathering open access scholarly articles or other open access resources into one text or one curriculum. Open textbooks offer affordable access, especially to basic and common information, and pose a challenge to traditional models of textbook publishing. Modifiable or community edited textbooks may also be difficult to establish as credible or scholarly sources.

Other models for digital textbook publishing are more traditional. Textbook publishers may offer digital textbooks or digital curriculums that are standardized across classrooms, easier to update, and compliant with national standards, teaching methods or goals. This approach also offers pitfalls. License or renewal fees for digital textbooks may impose unexpected costs for institutions. For example, in 2013, the LA Unified School District announced that it would face an additional $60 million to license the curriculum for its one-to-one iPad program.[11]

Outcomes

[edit]

Though many governments and school districts are making large investments in digital textbooks, adoption is slow. According to data from Bowker Market Research, in the spring semester of 2013, only 3% of college students used a digital textbook as their primary course material.[12] In multiple studies, strong majorities of college students, teens, and children continue to express a preference for printed books.[13][14] Furthermore, there is conflicting information about how digital textbooks affect learning, cognition and retention.[15] However, students are growing more exposed to digital textbooks, and early research suggests that student performance is about the same whether students work from digital or printed texts.[16][17]

See also

[edit]

References

[edit]
  1. ^ Reckelhoff, Benjamin (2025-08-07). "How eTextbooks Work". ecampus.com. Archived from the original on 2025-08-07.
  2. ^ Creno, Cathryn (17 March 2014). "Online e-books replace heavy school textbooks". AZ Central. Archived from the original on 18 March 2014. Retrieved 17 March 2014.
  3. ^ Haq, Husna (6 July 2011). "In South Korea, all textbooks will be e-books by 2015". Christian Science Monitor. Archived from the original on 18 March 2014. Retrieved 17 March 2014.
  4. ^ Toppo, Greg (31 January 2012). "Obama wants schools to speed digital transition". USA Today. Archived from the original on 18 March 2014. Retrieved 17 March 2014.
  5. ^ Grossman, Sara (17 July 2013). "Students prefer print for serious academic reading". Christian Science Monitor. Archived from the original on 18 March 2014. Retrieved 17 March 2014.
  6. ^ Howard, Jennifer (27 January 2013). "For many students, print is still king". Chronicle of Higher Education. Archived from the original on 31 October 2013. Retrieved 17 March 2014.
  7. ^ Heussner, Ki Mae (22 October 2012). "In digital textbook transition, device availability is just the beginning". Gigaom. Archived from the original on 18 March 2014. Retrieved 17 March 2014.
  8. ^ Ritch, Emma (2009). "The environmental impact of Amazon's Kindle". Archived from the original on 2025-08-07.
  9. ^ Reckelhoff, Benjamin (2025-08-07). "About VitalSource". VitalSource. Archived from the original on 2025-08-07.
  10. ^ Courduff, Susan (2011). "Digital textbooks and students with special needs". TeachingHistory.org roundtable: digital textbooks: has their time come?. TeachingHistory.org. Archived from the original on 24 March 2014. Retrieved 23 March 2014. The inclusive nature of digital textbooks has the potential to powerfully meet the diverse learning needs of students who are exceptional.
  11. ^ Blume, Howard (19 November 2013). "iPad software licenses expire in three years, L.A. Unified says". Los Angeles Times. Archived from the original on 29 March 2014. Retrieved 18 March 2014.
  12. ^ Greenfield, Jeremy (11 June 2013). "Students, Professors still not yet ready for digital textbooks". Digital Book World. Archived from the original on 19 March 2014. Retrieved 18 March 2014.
  13. ^ "The reasons young people aren't buying ebooks". Booktrade.info. 16 March 2014. Archived from the original on 19 March 2014. Retrieved 18 March 2014.
  14. ^ McNeish, Joanne; Mary Foster; Anthony Francescucci; Bettina West (Fall 2012). "The surprising foil to online education: why students won't give up paper textbooks" (PDF). Journal for the Advancement of Marketing Education. 20 (3). Archived from the original (PDF) on 28 February 2013. Retrieved 18 March 2014.
  15. ^ Jabr, Ferris (11 April 2013). "The reading brain in the digital age: the science of paper vs. screens". Scientific American. Archived from the original on 19 March 2014. Retrieved 18 March 2014. Research suggests that reading on paper still boasts unique advantages.
  16. ^ "Student response to digital textbooks climbs, says new BISG research". Bowker Market Research. 25 January 2013. Archived from the original on 9 February 2014. Retrieved 23 March 2014.
  17. ^ Sicking, Jennifer (6 May 2013). "Research shows students perform well regardless of reading print or digital books". Archived from the original on 19 March 2014. Retrieved 18 March 2014.
pearl什么意思 吃生红枣有什么好处 14时是什么时辰 马蹄是什么 bioisland是什么牌子
鸟加衣念什么 顾影自怜什么意思 上环是什么意思 1933年属什么 嘴唇发紫是什么病
什么叫自然拼读 画什么才好看 做肠胃镜挂什么科 颈部多发淋巴结是什么意思 螳螂吃什么东西
酸菜鱼可以放什么配菜 活塞运动是什么 婴儿吐奶是什么原因 口腔溃疡买什么药 未见胎芽是什么意思
字字珠玑是什么意思hcv7jop9ns2r.cn 二拇指比大拇指长代表什么xscnpatent.com 银屑病吃什么药hcv9jop3ns7r.cn 血燥吃什么药hcv9jop4ns0r.cn 拉肚子可以喝什么饮料0297y7.com
检查全身挂什么科naasee.com 从小一起长大的姐妹叫什么hcv7jop9ns6r.cn 心衰用什么药hcv9jop0ns7r.cn 碳酸钠为什么显碱性hcv8jop4ns5r.cn 痛经 吃什么gangsutong.com
新生儿甲状腺偏高有什么影响bysq.com 眼睛充血用什么药hcv9jop6ns8r.cn 语五行属什么hcv8jop9ns7r.cn 体检胸透主要检查什么hcv8jop0ns4r.cn 糖尿病人早餐吃什么最好hcv8jop1ns5r.cn
玉历宝钞是什么书hcv9jop5ns0r.cn 梅菌是什么病fenrenren.com 什么是上升星座imcecn.com 产假什么时候开始休hcv8jop8ns8r.cn 中年人手抖是什么原因hcv7jop9ns4r.cn
百度