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9th May 2008

New Macbook hard drive bliss

posted in apple | 5 Comments

Migrating to a new computer is, for all of us online today who plan to continue using digital technologies in our lives, as inevitable as death and taxes. The process can be quite unpleasant, however, especially if important files have not been properly backed up and saved. This evening, thanks to the wonderful help of my neighbor who has virtually every tool known to humankind at this point in our collective history (including the requisite “Torx T8 Screwdriver” and “Phillips #0 Screwdriver”) I am now up and running on a 250 GB 5400 rpm hard drive from Newegg that amazingly cost just $120. (The cost went up a bit since I ordered it Monday, it was on special.) I have been running with a 120GB 4200 rpm hard drive for the past two years on my Macbook, and it is amazing what that hard drive speed difference can make. I have 2 GB of RAM in my Macbook, while my wife only has 512 MB, but her hard drive has been a 5400 rpm model since she got it and that has made her computer seem much “zippier” than mine quite frequently, even though I have four times the RAM she does. I have been fighting to maintain the recommended 10% minimum free space on that 120 GB drive for many months, so the chance to double the size of my drive is WELCOME. I’ve also needed to do a clean install of my system, and this hard drive upgrade provided a reason to do it. So far, in addition to just installing the operating system, I’ve installed Mars Edit and Skitch. Those programs are my right and left hands when it comes to blogging. All my applications are (hopefully) listed on wesley.jot.com/macapps, and I’m going to begin the laborious but necessary process of installing all those programs from scratch tonight after finishing this post. The following one minute YouTube video was of assistance in replacing the hard drive tonight, as was this tutorial from Macinstruct.

While the video may make this process look easy, I made the unfortunate mistake of putting the hard drive in upside down the first time, and getting the rubber guide pads inside the laptop pushed down to the bottom of the hard drive space. So…. a process which should have taken 15 - 20 minutes ended up taking several hours. Thanks to the wonderful patience and assistance of my neighbor, however, the deed is done and I’m computing with a new hard drive!

I am VERY thankful for my .Mac account, which permits me to sync my local Safari bookmarks, contacts, widgets, dock items, passwords saved in my “keychain,” preferences and notes:

Mac is wonderful!

It does NOT appear that all my saved network configurations for different locations were copied over, but it actually may be a good thing. I have had some trouble with my system slowing down, particularly when I ran Skype, and I’ve thought that I probably had too many extra preference files and other installed files on my system for its own good. I’ve had both the Smartboard and Promethian software programs installed on my system, and I know that many of these programs were slowing things down for me. I’m VERY happy to be starting “clean” with a fresh version of the operating system.

If you have a recommendation for a relatively inexpensive 2.5″ hard drive USB enclosure I’d love to hear about it. I may put my old hard drive in it and use it as an extra hard drive for iMovies and backups.

Isn’t it hard to believe that our children today are going to look back at 2008 and say, “Wow, can you believe they were using laptop hard drives back then that were only 250 GB?! That is so SMALL!” :-)

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9th May 2008

links for 2008-05-09

posted in edtech | 1 Comment

9th May 2008

iPhone disappearing photos workaround found!

posted in apple | 5 Comments

For weeks I have languished with a broken digital camera on my iPhone. The camera has not been mechanically broken, but functionally broken, since each time I snapped a picture a mysterious grey box would appear in my camera roll photos instead of an image thumbnail. When I would click on the mysterious box, the iPhone would quit out of the Photo Library application and return to the home screen. I tried updating my iPhone software, restoring the software from a backup, rebuilding my iPhoto library, and asking local friends with iPhones for other troubleshooting ideas. Nothing worked. Finally, I took my iPhone to our local Apple Store (after making an appointment online for the Genius Bar) and explained the situation. The helpful Apple Genius immediately provided me with a new iPhone, which I was delighted to receive, but didn’t have any advice about what caused this problem or how it could be avoided in the future.

iPhone on display at MacWorld 2007

The new iPhone took and saved pictures fine, and I was able to restore all my music and video files, as well as other settings, to the new iPhone when I returned home and connected it to my computer and iTunes library. The first time I synced the new iPhone to iPhoto and chose to DELETE ALL my iPhone pictures after they transferred to iPhoto, however, the problem reappeared! I could no longer take any photos on my iPhone. How frustrating!

This evening I resolved to take some time to hunt for possible fixes to this glitch, and I’m pleased to report I found a workaround which did NOT require that I “jailbreak” my iPhone. Before I share the solution that worked for me, I will detail my linktribution:

  1. I Googled “iphone camera problem”
  2. I scanned the post and latter answers on Jeffrey Zeldman’s Nov 2007 post, “iPhone ‘disappearing photos’ bug” which was hit #4 on the previous Google search results.
  3. I found the Apple Support Discussion “Topic: Camera will not save pictures to phone after snapping photo.”
  4. I read a user’s comment that doh-boy’s Option #4 solution on that discussion thread had worked for him, I found that series of steps and tried it.

Whoa-la! Like magic, my iPhone now takes pictures like a champion and I can sync them to iPhoto without a problem! The only catch: As doh-boy recommended, I have to avoid deleting ALL the pictures from my iPhone after I sync them to iPhoto, and leave at least one of them on the iPhone. Here are the steps that doh-boy recommended which worked for me:

  1. Make sure you sync your phone so you have the most current back-up of your information.
  2. Click on the Restore button located in the Summary tab of iTunes.
  3. After the phone settings are restored, DO NOT restore your personal information from a back-up, instead eject the iPhone and take a photo. The photo should now appear in the camera roll, like normal.
  4. Attach the phone to the dock and import the photo into iPhoto (I did not delete the photo from the phone).
  5. NOW restore your personal information from a back-up through iTunes.

If you have this problem on your iPhone, perhaps this solution will work for you as well. The Apple support discussion page where this solution is shared still lists this issue as unresolved with the statement at the top, “This question is not answered.” I’m guessing this software glitch will be resolved in an upcoming iPhone software update from Apple. Thanks to doh-boy for this solution… I “languish” no longer! I’m again armed and ready to document life events with my iPhone camera! :-)

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9th May 2008

Fun learning math while conquering a foreign village

posted in games, web 2.0 | 3 Comments

For several months now, my 10 year old son and I have been having LOTS of fun playing the online real-time war game Travian. We recorded podcasts in December 2007 and March 2008 to discuss what we have learned so far playing the game. This week, we have been focusing on “chiefing” other villages. There are two basic ways to expand your personal “empire” in Travian and build/obtain more villages. The first way is to build up your palace or residence (one of the buildings in each of your villages) to level 10, 15, or 20, and earn enough “culture points” to found a new village. You can found a new village either by training “settlers” who can be sent with basic resources to an unoccupied area on the virtual Travian map grid, or you can train a “chief” (in my case he is called a Senator, because I am in the Roman tribe) who can be sent repeatedly to another existing village. It is necessary to destroy the residence in the village you want to take over with your chief first, before sending the chief, and afterwards each time your chief arrives in the village he lowers the “loyalty” of that village by a percentage. When the village’s loyalty is lowered to zero, the entire village becomes yours. This entire process (which is admittedly and delightfully complex) is explained well in this official Travian tutorial, “Preventing Conquerings.” This is the screen I saw yesterday after having destroyed the residence of a nearby village and repeatedly sending my Senator to it with an armed escort:

Travian: A Villiage successfully "chiefed" by my Roman Senator!

I chose to “chief” a smaller village than Alexander did, and the player who owned the village I successfully “chiefed” wasn’t active in trying to fight off or resist my attacks. The situation with the village Alexander is trying to take over has been quite different, however. The population of the village is larger, and the player is very active. This situation has provided a great context for us to discuss math skills and learn some new ways to use mathematical tools as well as strategies to solve problems.

I have written previously about the value of playing Travian in terms of learning Internet safety. I have not posted about the mathematics learning value of Travian previously, but this has been one of the main reasons Travian caught my attention in the first place and I considered playing this game with my son. One evening a few months ago, Alexander was working out double digit multiplication problems on paper at the dining room table. He was not doing any homework, so I asked him what he was doing, and he explained that he was calculating how many resources he needed to trade or send to his village to build some type of new building. I was quite impressed that he was voluntarily doing some arithmetic “for fun,” and the more I learned about Travian, the more I learned about the value it can provide as a meaningful context for problem solving, math skills, communication skills, team leadership, and other important things.

I will post later about what Alexander has learned about coordinate plane geometry and two-dimensional graphing, because I am not able to locate a copy of one of the early graphs he created for our alliance using an online graphing program. This evening, I’d like to relate and document some of the learning I’ve seen him experience related to “chiefing” a new village.”

The following image shows a troop report from Alexander’s “rally point” in Travian, from his main village which he is using to “chief” or take over a neighboring village.

Attack launched to "chief" another village

In this report, you can see that Alexander had sent two attacks to the target village. The first attack includes two different types of soldiers, battering rams, and trebuchets. (Trebuchets are the catapults or “cats” for Gauls in Travian.) This first attack is sent to destroy the “residence” building of the opponent. Alexander timed his second attack, which included soldiers that could move much faster because they weren’t traveling with battering rams at cats, to “land” (arrive) 1 minute and 34 seconds after the first attack landed. This was somewhat challenging to do, because of the different speeds of the attack forces. He did it, however, and the result was that his opponent did not have time to reconstruct (or start construction) on a new residence building after the first attack destroyed that building via the trebuchets.

Wikipedia image of a Trebuchet

Since I have a larger set of villages on our Travian server and want to help out my son, I offered (and he accepted) to send my own troops and catpults (called “Fire Catapults” since I am a Roman) to destroy the residence building in the village Alexander is trying to “chief.” I am much farther away, geographically, from the targeted village than Alexander’s main village is, however. One result of this difference is that my troops take MUCH longer to travel to that village and attack it. Travian is a realtime war and strategy came, which means events take place according to real time in the face-to-face world. Alexander’s cats can depart and land in the target village in a just under two hours, but it takes over ten hours for my troops and cats to land. Because of this challenge, last night we created a basic Excel spreadsheet together to make some calculations, based on the inputs we knew. We used the Travian website to calculate when I should send my troops and cats, so they could hopefully arrive just before Alexander’s. We were basing his options on when he would get up in the morning, since he couldn’t send the attacks in the middle of the night. This is what our spreadsheet looked like:

Travian Cacluations to chief a village

This morning Alexander launched his attack, but it turned out the defending player had enough time (about 30 minutes) to start reconstruction on his residence after my attacks had landed. The result was that Alexander’s “chief” attack failed. The message he received said the residence had not yet been destroyed:

Residence has not yet been destroyed

In considering these events, keep in mind that Alexander is attending 4th grade at our local, public elementary school during the day, so is having to make these decisions and send out these attacks before and after school. (He doesn’t have web access to Travian during the day, since he doesn’t use his personal laptop at school at all or have an iPhone.) Since our attempted coordinated attack had failed this morning when he was at school, we discussed a new battle strategy late this afternoon. We realized that instead of sending ALL his cats in an initial “cleaning wave” attack, and then having to carefully time his second attack with his “chief” to arrive closely after the first one, he could hold back one cat (trebuchet) and send it with the chief’s attack. That way, the two attacking parties would have the same speed and “land” immediately after one another. The result? The first “cleaning attack” successfully destroyed the opponent village’s residence and village wall:

Cleaning wave attack in Travian

The second attack (including the “chief” who would persuade the inhabitants of the receiving village to have lessened “loyalty” to the current owner/ruler/player of that village) landed exactly 1 minute and 34 seconds later. The defending player didn’t have sufficient time to rebuild his/her residence, so the village’s loyalty was reduced by almost 25 percent:

A successful chief attack in Travian lowering opponent loyalty

This entire sequence of conversations, decisions, and actions by Alexander was a great opportunity to see him practice problem solving and mathematical calculations in a relevant, meaningful context. Too often in school, we are teaching skills “just in case” instead of “just in time.” Alexander is using his math skills and learning new ones in Travian, as well as further developing his problem solving skills, to accomplish tangible objectives he really cares about.

It is exciting to be learning and playing together in Travian, and to witness how online games like Travian can help young students develop a rich repertoire of skills– including mathematical abilities! :-)

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