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- Mike Kern
- Wisconsin Educational Communications Board
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- “Of the three, datacasting was the best”
- School technology specialist
- “It provided students a way to easily use a wealth of resources”
- “Teaching history could become less chronological…have much more depth”
- “Students had an authentic learning experience”
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- 46 educators rank content options – Fall 2002
- Package of searchable rich media & other resources (DAM) – 1.70 (on
1=high to 4=low scale)
- Interactive/enhanced TV (resources wrapped around episode) – 2.23
- Access to video episodes or clips, but fewer other assets –2.77
- Access to other providers’ resources (museums, etc.) using DAM –3.09
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- 44 educators rank delivery options – Fall 2002
- Datacasting –2.01 (on a 1=high to 5=low scale)
- Internet –2.46
- Pre-loaded hard drives on network –3.30
- Via digital cable/satellite STBs –3.44
- Shipped CDs or DVDs –3.57
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- Age appropriate, interpreted for use
- Suggested inquiry paths to aid teacher prep
- Closed-captioning needed
- Succeed at a few things first, then build upon
- Get systems integrator for complex projects
- Lots of QA & field testing
- Keep time frames realistic
- Indexing deeply takes time – 8:1 ratio for clips
- Small files sizes, even for datacasting
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- Keep all informed of big picture
- Have project coordinator involved in all aspects
- Ask all groups about needs, issues
- Scheduling around 24/7 operations
- Assume nothing
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- Follow instructions carefully
- How would we make this a smooth part of daily broadcast operations?
- Problems using entire bandwidth we dedicated to datacasting
- How ensure reception—acknowledgement server, forward error correction,
repeating?
- How could hundreds, thousands of receivers be supported?
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- Schools vary widely – aim for LCD?
- School filtering & proxy servers
- Extensive on-site technical tests first
- How much server capacity is enough?
- Need to support diagnosis during initial use
- FOD – datacasting software fixes on demand
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- CDs were least desired, but most reliable
- Multiple delivery methods may serve best (still took 20 hours to
datacast about 8 GB)
- Consistent datacasting adds up (sent 90 GB in 14 days of testing with
opportunistic data only)
- Datacasting could allow DVD content to be used on computers without DVD
drives
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- We’ve tested Triveni, Skystream & Kencast
- Some factors to consider:
- Ease of installation
- Reception
- Scheduling of datacasts
- Monitoring of receivers; ensuring reception
- Delivers consistent datastream
- Security, encryption of selected content
- Management of data storage
- Let’s challenge them to a shootout!
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- Introduction & full day of training
- Provided hands on training and allowed for lots of brainstorming
- Instructional design skills – taught in preservice?
- Needed release time to be trained
- Metatag list provided, but too little time to prep
- Depth of content—better for extended project
- In-service videos could be part of package
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- Middle school had to upgrade all lab computers
- Consider lab availability – not like TV in class
- What will network allow? (CD drive was hidden)
- Lots of CDs called for notebook system
- Internet to classroom doesn’t mean easy to use with entire class
- In focus groups, concerns expressed about server costs
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- We need answers to these quickly because one of the most common
questions we heard was:
- “Can we keep it?”
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- Any questions?
- (We’ve still got plenty, but we’re excited about the future.)
- www.ecb.org/dtv
- mkern@ecb.state.wi.us
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