teaching and learning with technology to edit master title style allyn and bacon 2002 teaching and...

Teaching and Learning with Technology Allyn and Bacon 2005Teaching and Learning with Technology

to edit Master title style

Allyn and Bacon 2002Teaching and Learning with Technology



Video Technologies

Chapter 10

Teaching and Learning with Technology

Teaching and Learning with TechnologyTeaching and Learning with Technology




Allyn and Bacon 2005Teaching and Learning with Technology Allyn and Bacon 2005

Motion Video• Whether traditional or digital, can

bring content to life.

• Brings distant, imaginary, or simulated places into the classroom

• Brings history to life

• Reinforces instruction

Video in Teaching and Learning






Motion video can also

• Disengage learners

• Encourage passive learning

• Educators are challenged to find effective ways to integrate video into instruction







Video History• Movies were first used in schools in

1911• Television joined movies as an

instructional tool in the 1950’s• Video tape became available in the

1980’s• Today, there is digital video (on DVD

and the Net)







Broadcast Video• Television images delivered via

terrestrial and satellite equipment

• Programs are uplinked to satellite and then downlinked to receivers

Traditional Video Technologies






Broadcast Video• Commercial TV and educational

TV (PBS) offer educational programming

• Local learning channels offer targeted educational programming







Broadcast Video• Programs typically high-quality, high-

cost productions

• Synchronous nature of TV difficult to use in time-restrictive classrooms

• Time limitations may be overcome by recording broadcasts if copyright permits







Narrowcast Video• Video signals targeted to a specific

audience

• Instructional Television Fixed Service (ITFS) is a terrestrial system

• Distributed via microwave from broadcast locations to schools







Narrowcast Video• Require line-of-sight to transmit-- may

not be possible in some districts• Dedicated video network for a district

so programs can be offered multiple times each day

• Can target very specific district instructional needs







Closed Circuit TV (CCTV)• Television signals received by a school

then distributed internally via CCTV

• CCTV can also be used for sharing in-school video productions by students

• Can also be used to distribute recorded broadcast or live ITFS programs







Cablecast Video• Cable TV companies typically offer a

channel for schools or public use• Cable may be connected to the schools

CCTV system• Quality cable television shows (CNN,

Discovery, Learning Channel) can be easily incorporated into classroom instruction








Video DistributionSystems inSchools






Recorded Video• This asynchronous format is the

format of choice for schools

• Video Cassette Recorders (VCRs) playback video recorded on VHS tape

• Tapes may pre-record programs that occurred at inconvenient times







Recorded Video• Tapes may be commercially prepared

• Playback, copyright permitting, can be easily scheduled into classroom time

• Monitors provide viewing from all parts of the classroom







Recorded Video• Most digital projectors can accept

VCR input for large group projection

• Camcorders (Camera-Recorders) can also record video images of a class or instructional activities for later VCR playback







Digital Video Basics• Digital video images allow for limitless

editing

• Instructional annotation can be added to any frame

• Frames may be rearranged for better instructional emphasis

Digital Video Technologies






Digital Video Basics• Digital video can be added to many

digital files

– Presentations, web sites, etc.

• Full motion digital video files are very large

– Three minutes of video require up to one gigabyte of storage







Digital Video Basics• Video compression helps remedy the

file size problem

• Compressed files require video compression playback software

– MS Media Player, Real Player, and Quick Time, etc. decompress and playback video







Digital Video Basics• AVI, MPEG, and MOV are the most

popular compression formats today

• Players such as Real Player and Windows Media player can display all 3 formats

• Check your player to be sure they can handle your format before using it in your classroom







Digital Versatile Discs (DVDs)• DVDs can store up to 10.5 gigabytes of

digital video on each side• DVD storage also allows for frame-by-

frame play back• DVDs offer direct access to any frame

or sequence • DVD-Rs, which allow recording, are

now on the market







Digital Video Capture• Analog video can be converted to

digital via a video capture expansion card

• External jacks on the card allow analog video input from VCR, cable, etc.







Digital Video Capture• Card captures, compresses, and

stores the video on the computer’s hard drive

• Video editing software makes it possible to edit captured video







Digital Video Cameras• Capture and store moving images as

digital files rather than on tape

• Download the digital files to computer and manipulate with editing software

• Video clips can be played back on computer monitors or LCD projector

• Clips can also be inserted into email, presentations, etc.







Digital Video Editing• Video editing requires dedicated

hardware or software

• Editing hardware offers maximum editing capabilities but its expensive

• Editing software can run on a PC but typically lacks high-end editing features







Compressed Video Systems (CVS)• Live compressed video images are

transmitted – Large files require significant

bandwidth• CVS are dedicated, often room-size

systems – designed to use high-speed,

broadband phone lines







Compressed Video Systems (CVS)• CVS include video cameras, monitors,

microphones and codecs

– Codecs are for compression-decompression

• CVS offer real-time, interactive live video interaction to all locations








A TypicallyConfiguredCompressedVideo System






Internet Video - Broadcasts• Live compressed video images can also

be transmitted across the Net

• Internet broadcasts (webcasts) offer streaming video to shorten wait times

• Emerging compression technologies means interactive Net video will become more useful for schools







Internet Video – Live Cams• Live cameras connected to computers

and logged into the Internet showing live digital video

• Many live cams are focused on subjects of educational interest

• Students can view live cams by visiting the live cam website







Internet Video – Net Meetings• Live digital video across the Net used for

virtual meetings • In addition to video, meeting software

may include shared work space, a shared virtual electronic whiteboard, and chats

• Educators can adapt meeting software for class collaboration around the globe







• Videos in any format remain an invaluable teaching tool

• Video can

– Alter time through slow-motion replays or time-lapse photography

– Simulate historical or future events







• Video can alter space by visually transporting viewers to other locations

• Videos are not of equal quality

– Must be fully reviewed and carefully evaluated before use







Creating Videos• Teacher and student-made videos offer

creative learning opportunities and result in useful instructional materials

• When creating videos

• Storyboard to prepare for recording

• Plan to use the full potential of motion








Tips forCreatingSuccessfulVideos






Caveats when Creating Videos• Parental permission required when

images of students are used

• Be aware of district guidelines for video taping

• Copyright laws always apply







Implementing Video • Preview the entire video before showing

• Prepare for showing by

• Checking equipment

• Checking the environment (lighting, sound, seating) for viewing







Implementing Video• Engage the learner

• Review concepts and discuss objectives

• Use a video study guide

• Be ready to pause the video for discussions







Implementing Video• Be aware of both factual and emotional

content

• Anticipate possible student reactions

• Provide preliminary and post video discussion time

• Watch reactions


teaching and learning with technology to edit master title style allyn and bacon 2002 teaching and...

Documents