计算机专业英语郭敏计算机专业英语Unit8章节.pptVIP

Unit 8 Section 2 Passage A animation Interactive Multimedia ASCII BMP VGA analog format frame Microphone digitized speaker background sound Unit 8 Section 2 Passage B text-to-speech program talking book speech synthesis hypermedia computer simulation * * Unit 8 Section 2 Passage B 2. CD-ROM storybooks CD-ROM storybooks offer digital text in combination with features such as animations, illustrations, speech, and sound. For example, a CD-ROM storybook might offer the story text together with animations, vocabulary definitions, and sound effects. Some storybooks incorporate an audio version of the text. CD-ROM storybooks offer great potential for engaging students, and some incorporate valuable literacy supports. Thus, they can benefit reluctant readers and students with deficits in basic literacy skills. However, their multimedia features are not always instructionally germane. Some storybooks feature entertaining animations and sound effects that, while entertaining, do not directly support access or learning. In fact, they may be distracting for some students. Thus, teachers are wise to select CD-ROM storybooks carefully and with consideration of individual student characteristics. Unit 8 Section 2 Passage B 3. Video/videodiscs Video/videodiscs offer a means to contextualize curriculum content and instruction across the curriculum. For example, video can be used to anchor mathematics instruction to an authentic context. That is, video can be used to present to students a real-world context within which mathematical problem-solving can then be situated. Video/videodisc-based anchored instruction can similarly be applied to contextualize instruction in other content areas. These approaches are valuable in helping to engage and motivate students, in providing students with alternatives to text, and in supporting differences in background knowledge. Unit 8 Section 2 Passage B 4. Hypermedia Hypermedia refers to hyperlinked multimedia—the linkage of text, audio, gra