Apr 09

TEDxSFED Tweets From April 9th, 2011

  • IF printing, here’s an alt #TEDxSFED program that won’t kill the toner. I love black too, but c’mon http://t.co/vqw5uUJ
  • #tedxsfed cool vibe at the place twitpic.com/4isp5k
  • SOMArts kinda like the tents in old Bugs Bunny cartoons- looks small on the outside, but cavernous when you look in #tedxsfed
  • Note to self: talk to wife re: tweetwall for living room like #tedxsfed (would make life much easier) http://t.co/YZc6bCn
  • Pretty awesome. Didn’t know a ukulele had that many notes to play! http://t.co/IlDOblp #tedxsfed
  • Also need to help teachers be okay when don’t have ‘mastery’ of all tech that happens in classroom b/c kids will help #tedxsfed
  • David Orphal speaking on ‘TEACHER-PRENEURS’ at #tedxsfed was great.
  • #tedxsfed words: vampire, summer school, silo, green civic for The Freeze
  • Appreciated Victor Diaz speaking to students backgrounds, influences (Equity Pedagogy) #tedxsfed
  • Would be okay w/The Freeze just staying up there to provide some occasional punctuation for the remaining #tedxsfed speakers.
  • Check out The Freeze at http://on.fb.me/hMYxW8 #TEDxSFED
  • @TEDxSFED: What inspired you this morning #TEDxSFED? –> Victor Diaz & basics of trust, responsibility, follow-thru w/design thinking
  • Kudos to #tedxsfed organizers. Vibe/energy, speaker content and mix = all flowing well.
  • Now the awkward moments when people return to the #tedxsfed seats they were at this AM & find others sitting in them. Gotta roll w/it.
  • Esther Cook talking to slowing actions down for depth, details, and deliberate functions = great example of connection-making.
  • Clear that Ester Cook speaking from the heart. Easy to see how she inspires her students with her excitement & love. #tedxsfed
  • Like Esther Cook explaining the social aspect of learning and providing an environment for that in the kitchen. #tedxsfed
  • Glad Esther Cook spoke after lunch or I would be very hungry now w/all the food references. #tedxsfed
  • George Watsky = great as well at Lick-Wilmerding w/ YouthSpeaks performance last year. #tedxsfed
  • Vid of Youth Speaks Assembly w/@gwatsky and other poets back at L-W last year http://t.co/1yZeWgi #tedxsfed
  • #tedxsfed at @somarts was awesome. Bummed I can’t do edcamp. Now off to meet fam going to #sfgiants game at AT&T!
Mar 10

BYOI (Bring Your Own Internet) and K-12 Students: Perils and Opportunities

Nothing New

Mobile internet connectivity is nothing new.

Back in the 1990s, many of us were running around with Ricochet modems and PPP connections on our fat heavy laptops maybe getting 19200 bps around the streets of San Francisco. For New Year’s Eve 2000, I was shelled into email on my Palm V with my slick/expensive OmniSky wireless modem cradle while champagne and fireworks were all-around me near the Ferry Building so I could email by CEO right after we rolled-over to the year 2000 and prove we were okay for Y2K. We were.

After Y2k, and onward, smartphones like the Handspring Treo (later Palm Treo) really started to provide constant connectivity for email and simple web-browsing. Blackberry was in there as well. But, the mobile viewing of the internet and the speeds that one could achieve via the device itself or using a phone as a COM port or USB port ‘tether’ was never that great enough to provide such a wide-spread movement akin to the migration to the mobile phone we have seen over the last few years from the traditional ‘land-line’ POTS phones.

But that really seems to be changing now. With beefier smartphones and more complex handheld computers with robust operating systems that power them mainly from Apple, Google but also from other vendors like RIM, HP and Microsoft, we are starting to see the real likelihood of bringing all the internet you need with you for all your devices. For the average user, this can mean some wonderful freedom and flexibility. For the technology directors of K-12 schools, this means a lot more to worry about and evaluate. The main perils and opportunities I see relate to content filtering, equity and new possibilities for learning.

Content Filtering Efforts

The whole concept of being able to control the content students have access to via network content filtering will fade away. All of us who have chosen to implement content filtering know the limitations, false-positives and other perils it can generate, but still do it as a way to try and protect the school from content that adolescents might mistakenly or intentionally pull into the school environment and cause harm to others in the process. Right now many in my school have smartphones and will most certainly be flipping-on their iPhone Hotspot or Android Hotspot to use personally or to allow their friends to connect. Helping students take breaks from technology and gaming will become even more difficult than today. If students don’t need to go through you and your network, then they don’t need to understand or respect what your school is trying to setup as a learning environment. For lower and middle schools, the dilemma of unleashing the internet on students at all is also something that the school decides on.

I think this sort of shift will makes school administrators in the independent school world go one of two ways. Either they will embrace it like many 1-1 schools do now when looking at the folly and flaws of attempting content filtering combined with their sense that students can self-regulate or go down the road of further clampdown of technology through limiting access in a way to try and protect the school environment and culture. I think the real solution is somewhere in the middle and directly dependent on how your school values technology supporting the curriculum.

Absent of content filtering, many schools allow full access to the internet. Even though content filtering is quite problematic, it is a useful tool in the dialog or helping students understand what is appropriate in a the school environment and many independent school administrators move forward on that tenet. But, now with the BYOI concept, this mechanism will not be available for the school and schools will need to adapt usage policies and culture.

Equity of Student Body

All independent schools focus on their culture and what it means to be at that school. Honor codes, community and a sense of equity for all students at a basic sense, is quite common throughout all independent schools. Diversity of background is something that that many schools, like mine, cherish for the learning environment. But, I see this kind of shift in the portable power of information as something that can potential harm such focus on the creation of equity between students in schools.

Again, this is nothing new but perhaps just the nouns have changed. Used to be (and still is) some students have resources from their families to have cars, nicer clothes, take vacations to exotic places, etc. while others do not. I think this expanded sense of internet connectivity and ability to bypass the network structure of the schools for those that ‘have’ will be the new noun. School admin spend a lot of time and effort creating an environment where all students can thrive and have equal opportunity. This kind of differentiation – some students with the ability to go where they want whenever they want vs. those that cannot because they don’t have the tools and resources could really add another barrier to teachers and admin in schools. In a public school setting, the effects ‘haves’ and ‘have-nots’ will be even more severe. I can also see how different forms of ‘cliques’ of hotspots could manifest based on student groups access to information.

Equity in some form with technology will have to be addressed in schools that are ‘laptop’ schools or not. Also, just making sure every student has a laptop doesn’t address it anymore than giving a laptop (or any tech) to a student and assuming they know how to use it or will use it effectively for learning.

New Opportunities For Learning

I just mentioned a couple of perils of the the current shift and future acceleration of students bringing their own internet to schools, but I can also see a great deal of opportunities in this for the schools. There are many to think about but I can see a few examples right now. For schools in urban environments like mine, field trips to museums could be now structured with immediate online resource on works the students are looking at. Students could use social media tools for something productive related to their course while they were traversing the art or history.

In addition to augmenting class outings, students can use their mobile internet devices to coordinate with others in the area on projects in real-time. They can update their digital portfolios with content they are interacting with and creating immediately. There are many different models right now for distance learning and as that continues to evolve, mobile internet can allow schools to connect with students in rural areas not supported by wired broadband.

Conclusion

In conclusion, there are many ways this new shift toward BYOI can go but understanding that it is either happening at your school today or will be happening and accelerating in the future means you have to think about how will affect your schools mission, culture and technology structure. With all new innovation there can be wonderful opportunities and possible perils. The one sure peril for your school would be to ignore or gloss over the fact that students are going to be increasingly empowered with their own access to the internet whether you are ready for it or not.

Jan 13

TI-SmartView TI-84 Emulator and OS X 10.6.x Snow Leopard Fix

Many math teachers out there at use the Texas Instruments TI-SmartView TI-84 emulator software for their classroom presentations. The software does depend on Java. Recent updates and changes to Java versions from Apple on OS X 10.6 “Snow Leopard” seem to cause some problems for the application if you don’t have the latest version. Apple moved to Java 6 with Snow Leopard and that probably broke some things for the SmartView. Latest at the time of this post is v3.2.

The problem came to me when a Math teacher running v3.1 had launch issues. Saw some posts in the Apple Support Forums, but that didn’t provide a fix. Texas Instruments support was clear that 10.6.6 had JUST come out (which it has) and that v3.2 was tested in 10.6.4 and was probably going to work, but no ironclad guarantees.

Few things to note: You need to get v3.2 of the software.

The About This Software Splash Screen

3.1 will not cut it no matter what I tried. The way you do that is to download the version here

http://education.ti.com/html/smartview/smartview.html

Before you install the new version do the following:

1. Delete the old app in /Applications

2. Delete the directory in the users folder library relating to the 3.1 preferences: ~/Library/Preferences/Texas Instruments

Failure to do the pref directory delete kept the application launch crash going. Tech Support tells you just to remove the old 3.1 application, but I would remove the prefs as well just to be sure.

After you install and run v3.2 you can go on the 90 day trial license to get you up and going immediately. TI changed their licensing system and structure, so you will need to call them directly to upgrade your license code to the new 3.2 format.

Dec 02

Backing-Up and Transferring iMovie Projects

Anyone involved with groups of people doing movie projects in schools with students and teachers will tell you the transition off iMovie HD aka iMovie 6 has been a tough one for everyone to get used to. It happened many years ago now when Apple released a totally different application and called it iMovie 7 but it was completely different and just about every way then the previous version that everyone was accustomed to. Many of us have been trying to handle that transition for people for years now.

Perhaps the biggest issue for me around all of this is not so much what changed inside the walls of the application, but rather how iMovie 7 onward deals with its files. This is just a very difficult concept for people to have to grasp if they want to share or move an editable project around to other computers. The old iMovie would save all of its project-related data to a single database and content file – simple for people to comprehend. Starting with iMovie 7, iMovie keeps its data in a couple of folders and save a project file out is really worthless without the content that file is pointing to.

To effectively backup or make a movie project portable you now really need to grab the directories iMovie is using because in the combination of those directories is your iMovie project.

To backup your iMovie projects

1. Quit iMovie
2. Copy the two directories under the /Users/<current username>/Movies folder named

iMovie Events
iMovie Projects

to an external drive or large USB memory stick. This has all the video data you might have used in the project.

3 .If you used photos and or music as well, you need to really grab these directories as well to be sure you have what you will need.

/Users/<current username>/Pictures
/Users/<current username>/Music

To place your movie project on another Mac you need to do the following.

1. Make sure iMovie is not open.

2. Connect media you moved everything onto and copy the folders into the same paths they were in on the above procedure.

3. Open iMovie. It will be looking for those paths and when it sees that data, it will provide you will all the event clips and settings you had on the other computer.

It is quite annoying and especially the case in a lab computer environment where students might be working on things from home, then bringing them into the school, then passing them around to other students doing groupwork, etc. The frustrating aspect of this is that a similiar problem and solution is out there now if Apple could just replicate it.

Generating InDesign files is very similar to what we are dealing with in iMovie projects. InDesign uses fonts, images, etc. and if you need to give a printing house your information or pass an InDesign project to another designer, you have the function of ‘Packaging‘ the file. This allows InDesign to gather all the relevant files for the file together in a simple way so it is easily portable to another user/computer.

I would LOVE to see Apple incorporate something like this. I have mentioned this multiple times to Apple Reps around the iMovie training and product management, but nothing yet. I had hoped iMovie ’11 would have had something like this, but didn’t happen.

Oct 03

Using FFMPEG To Prep Video For Whipple Hill Podium

Even going to Adobe CS5 and switching OS X 10.6.x to 64-bit doesn’t really make the process of taking Quicktime video to Flash in a reasonable timeframe. So, enter FFMPEG command-line tools. I have been playing with many different settings to get the performance and quality at an optimal state for playback in the Whipple Hill Podium Media Gallery.

Whipple Hill recommended (as of 9/13/10) video settings for the gallery should be

  • Audio sample rate: 22050
  • Audio bitrate: 56k
  • Video bitrate: 512kbit/s
  • Video framerate: 30
  • Dimensions: 800 x 600

This, of course, is standard definition. Most video cameras now are HD and so is the one I have for our community meetings, so the closest size would be hd 480. I have tried a lot of settings and am finally happy with the ffmpeg encoding options below. Other settings we have gone with can lose sync with video/audio and may not be optimal for your users if they have marginal internet bandwidth.

ffmpeg -i something.mov -s hd480 -ab 56k -b 512k -r 15 -ar 22050 -qscale 10 -async 2 something.flv

This basically stating

Take the input video file (something.mov) and

  1. size it to hd480 (852×480)
  2. set the audio bitrate to 56k
  3. set the video bitrate to 512k
  4. set the framerate to 15 (saves some space)
  5. set the audio frequency to 22050
  6. set the qscale to 10 (more here at Wikipedia on this)
  7. Sync audio and video

to get the output file (something.flv)

This seems to give us the best bang for the filesize. Hope this helps others.