Scary high resolution desktop Wallpapers

To save the image, first click to enlarge the image, then right-click on it and click on Save Image As.. or simply right-click on the thumbnail and click on Save Link AS..
Note: all are high resolution images greater than 1024 x 728 px.

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Beautiful Aqua Screen Savers for your PC

A very beautiful aquaworld screen saver which helps you to relax. This multiscene animated screen saver includes species of fish, underwater creatures, natural rocks and plants. It turns your desktop into a porthole for viewing charming underwater scenes.

Download

• Link 1
• Link 2
• Link 3

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Pinnacle Studio 14 Tutorials By PinnacleStudioPro

Tutorials for Pinnacle Studio 14 video editing software By PinnaclestudioPro.


SHARE BY GK
Computer Knowledge

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How To Make A Free Blog With Blogger In Hindi By Kya Kaise

How To Make A Free Blog With Blogger In Hindi By Kya Kaise.


SHARE BY GK
Computer Knowledge

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PowerShell v3 Function Set IEStartPage

Another spin off of the Scripting Guys post,

Hey, Scripting Guy! How Can I Change My Internet Explorer Home Page?

gave me this function for setting the IE start page:

function Set-IEStartPage

{

       [CmdletBinding()]

       param(

             [String]

             $StartPage = about:Blank

       )

      

       if((Get-IEStartPage) -ne $StartPage)

       {

             Write-Verbose "$(Get-TimeStamp): Attempting to set IE start page to $StartPage.";

             Set-ItemProperty -Path HKCU:SoftwareMicrosoftInternet ExplorerMain -Name Start Page -Value $StartPage

            

             if((Get-IEStartPage) -ne $StartPage)

             {

                    Write-Error "$(Get-TimeStamp): The IE start page has not been set to $StartPage.";

             }

             elseif((Get-IEStartPage) -eq $StartPage)

             {

                    Write-Verbose "$(Get-TimeStamp): The IE start page has been set to $StartPage.";

             }

       }

       else

       {

             Write-Verbose "$(Get-TimeStamp): The current IE Home Page already matches $StartPage.";

       }

}

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Helping teachers teach computer science

Posted by Karen Parker, Education Program Manager and Jason Ravitz, Education Evaluation Manager

(Cross-posted on the Google for Education Blog)

Since 2009, Google’s CS4HS (Computer Science for High School) grant program has connected more than 12,000 computer science (CS) teachers with skills and resources to teach CS in fun and relevant ways. An estimated 600,000 students have been impacted by the teachers who have completed CS4HS professional development workshops so far. Through annual grants, nearly 230 colleges and universities have hosted professional development workshops worldwide.

Grantees use the funds to develop CS curriculum and professional development workshops tailored for local middle and high school teachers. These workshops expose teachers to CS curriculum using real-world applications that spark students’ curiosity. As feedback from those teachers rolls in, we want to share some highlights from what we’ve learned so far.

What went well:

• 89% of participants reported they would recommend their workshop to others
• 44% more participants reported a “high” or “very high knowledge” of CS after their workshop vs. before
• More than half of participants said they would use “most” or “all” of the activities or resources presented during their workshop.
• In 2014 the number of teachers who took part in a CS4HS professional development workshop increased by 50%, primarily due to the funding of multiple MOOCs.

Ways to make a bigger impact:

• Just 53% of participants said they felt a sense of community among the other workshop participants. Research by Joyce & Showers (2002) and Wiske, Stone, & Levinson (1993) shows that peer-to-peer professional development, along with ongoing support, helps teachers implement new content, retain skills, and create lasting change. We’ll explore new ways to build community among participants as we plan future workshops.
• 83% of participants reported being Caucasian, which is consistent with the current demographics of CS educators. This indicates a need to increase efforts in diversifying the CS teacher population.
• Outcome measures show us that the most knowledge gains were among teachers who had no prior experience teaching CS or participating in CS professional development -- a population that made up just 30% of participants. While we see that the workshops are meeting a need, there remains an opportunity to develop materials geared toward more experienced CS teachers while also encouraging more new teachers to participate.

We know there are many challenges to overcome to improve the state of CS teacher professional development. We look forward to sharing new ideas for working in partnership with the CS education community to help address those challenges, in particular by helping more teachers teach computer science.

At the University of Sydney CS4HS workshop teachers are learning how to teach

Computer Science without a computer during a CS Unplugged activity.

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How to fix Raspberry Pi boot problems

If you have any problems with your SD card messing up or your Pi not booting, this is an attempt at documenting my issues with booting or SD card corruption and how I fixed them.

This can range from problems with rpi-update to changing the /boot/config.txt file to restoring the SD card superblocks from the superblock backup to Oh No my SD card is hosed and I need to recover files. Weve all been there so need to be embarrassed about messing something up. Things mess up a lot.

Boot Problems

First of all, this is a great reference that I use a lot.

Start by figuring out what changed.

• Did you just change your /boot/config.txt?
• Did you delete any important files?
• Did you run rpi-update?
• Did you add a new device?
• Did you overclock too much?
• Do you get a kbd prompt?
• Did it run some weird commands on the shutdown about "device still open for writing"?

If you just changed your config.txt, you should change it back and then change line by line while rebooting until you see what option is causing the error.

If you deleted any files, restore them.

If you ran rpi-update and it wont reboot, try making your /boot/config.txt the default one. The cma_lwm and cma_hwm options sometimes cause the new firmware to break.
If that doesnt work or you have flashing light errors, restore the old boot files by copying the /boot.bak/ files into /boot/
sudo cp -ap /boot.bak/* /boot/

If you recently overclocked, try reducing it back down. I run 1100 MHz easily but 1200 MHz tends to be unstable for me.

If you get a kbd prompt or error, check your power supply to make sure its supplying enough voltage, then reduce any overclocking or overvolting in your config.txt, then (if the first two dont solve it) replace the boot files like described above.

If you have a kbd prompt that you couldnt fix, you get read/write or I/O errors on shutdown or startup, or 

it cant find the ext4 partition, then you have been a victim of SD card corruption.
Dont worry though. There are still ways to recover your files.

The first thing you should do is make a copy of your SD card image.
Plug the card into another computer with linux and use dd to copy the image. Then you can try to fix the image file without further corrupting the data.
The first thing to try to do is replace your superblock with a backup. To do that click here.
If that doesnt work and all else fails, it is possible to use scalpel and custom recovery configuration to get your files. See here for how to do that.

Consider donating to further my tinkering

Places you can find me

• Facebook
• Google+
• Linkedin
• Blogspot
• Google-Code
• Github
• YouTube
• Twitter

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