PowerPoint Presentation€¦ · . denmark. Title: PowerPoint Presentation Author: Jan-Willem Plomp
Presentation (PowerPoint)
Transcript of Presentation (PowerPoint)
Distributing Classroom-
Based Videos Economically Via the
Internet
Elizabeth Turner SmithUniversity of Louisiana at [email protected]
Jane WamplerUniversity of Louisiana at [email protected]
http://www.ulm.edu/~esmith/nctm
Motivation Need for ULM Specific Math Videos
(not generic) Desire to Offer Classes via Internet Need for Inexpensive Delivery Wanted Accessibility for Majority of
Students (not just distance learning students)
Earlier Attempts Streaming Video (thought about it,
couldn’t afford it!) Initially Attempted Incorporation of
Web-Delivered PowerPoint with Videos .AVI and .WMV movie unstable when
loading to Blackboard
Attempts Direct .WMV problems
Video Quality Low and Large Video and Audio Machine Dependant
and Unstable
Attempts (cont.) Importing from .AVI form to .WMV
Higher Quality and Much Smaller Size, as Little as 1/30 of Original .AVI Size
Original .avi Converted .wmv
What was produced Web (and CD) Delivered Window Movie Maker Clips of Class
Content Viewable from Internet Explorer
Browser When on CD, Internet Connection not
Needed
Making Video Even Smaller Long Videos
Small Single Problem Clips Reduce Download Time
Videos Made on White Board Glare from Board
and Character Bleed from Markers
Making Video Even Smaller (cont.)
Small chalk board Eliminate Character Bleed and Some
Glare As Little as 1:30 Compression Rate
Camera Placed above Board Eliminates Camera Glare
Making Video Even Smaller Quality of Original Video Does Not
Impact Size of Final .wmv File Low Quality .avi File about 250K/sec. with
Resulting .wmv File about 12.5K/sec. High Quality .avi File about 370K/sec.
with Resulting .wmv File from 12.5 to 13K/sec.
Not a Huge Sacrifice of Space for Greater Quality!
Developer of Video Needs Web Camera MS Windows Movie Maker
Which is Included in ME & XP Web Site with Ample Server Space
Math093 is Using Approx. 1.5GB CD Burner Tripod Small Chalkboard
Computer Requirements to Develop Videos
Pentium II or Better 300mHz or Better 64 MB RAM 2.5 GB of Free Space on Hard Drive
Large Hard Drive to Store .avi and .wmv files
USB port Windows ME or XP
Cost (assuming you have the computer)
Web cam $ 100 Upgrade ME (if needed) $ 99 Tripod $ 15 Chalkboard $ 15 Total Cost $ 229 (or
less)
Procedure to Make Video
1. Video Made with Simple Web Camera in .AVI Format
2. Import Video into Windows Movie Maker
Edit and/or Merge with Windows Movie Maker
3. Save Clips into Window Movie Maker .WMV file
4. Place on Website
To View (No Windows Movie Maker needed!) Must have IE (free) and Media Player (free)
Cost Students Nothing! Open IE, Go to Website Click Video, Automatically Opens in Media
Player Watching Videos
As much as student wants Pause Rewind Save to hard drive
Plug-ins Available for 95, 98, ME, XP, Macs and Supposedly Netscape
Problems (and Solutions) Windows Movie Maker Only on
Windows ME and XP Solution: Upgrade Windows (approx.
$100) Only Need if You are Creating Videos
Students Without High Speed Still Have Problem with Download Time Solution: Create CD version
Responses and Concerns IE Dependent
Netscape Developed Plug-in, But Have Had Trouble
Not Sure about Usage on Macs Download for Students is Slow if not on
Campus or Without Cable Modem or DSL
The Slower Your Machine the More Likely You are to Have Pauses in Video
Takes more Time to Convert and Upload than to Create
Uses at ULM Review of Material for
Developmental Math Test-Outs Review of Class Lecture Material for
Maths 093 and 111 If a Student Misses, Lecture Can Still be
Seen and Heard Course Instruction for Internet
Courses (not just text, audio and video included)
Possible K-12 Uses State Assessment Review Material
for Parents and Students Material for Absent Students Review for First-time Teachers of
Material Capturing Field Trips for Use in
Future Years Your Ideas?
Conclusions Continued Response from
Students, Other Teachers, and General Public is Very Positive
Potential Uses Numerous Biggest Cost, for the Creator, is
Time Costs Students Nothing
Contact InformationBeth SmithUniversity of Louisiana at
ULM Department Mathematics Websitewww.ulm.edu/~mathweb
Click on Math093 or Math111
Jane WamplerUniversity of Louisiana at [email protected]
Camera Information We are using:
Intel Pro PC Camera (no longer available)
Spec Information can be Found at:http://www.intel.com/pccamera/pro_sysreq.htm