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Happy 35th Birthday Ethernet

May 22, 1973: Enter Ethernet

1973: Bob Metcalfe of the Xerox Palo Alto Research Center writes a memo outlining how to connect the think tank’s new personal computers to a shared printer. The memo puts forth the basic properties of — and names — ethernet.

Looking at his diagram, he had the foresight to see networking not only over a local area network, but also telephone lines and radio waves.

Wiimote interactive whiteboard success

Since I am home this week, I decided to get caught up on some projects. The big one was working on getting an interactive whiteboard setup going with a Nintendo Wiimote and an infrared pen. This morning, I finally got my infrared pen working. What I did was bought a cheap LED flashlight from Walmart and replaced one of the LEDs with an infrared LED, the Radio Shack 276-143 to be exact.

After checking that the pen worked, I downloaded the Wiimote interactive whiteboard software and it worked! I’ll try to get some pictures and a video up, but I don’t know if I’ll have time today.

Next goal is to find some whiteboard software to use with it. For right now I’m just using Inkscape.

Why do students need email?

On the Ohio Technology Coordinator’s listserv this question was posted:

We already had one case of student to teacher generated e-mail that originated on a student computer inside the school. The FIRST question I got as the Tech Director was ‘Why are you allowing students to send and receive email in school?’

And my question would be, “Why are you letting them use pencil and paper? They could be sending notes to other students or staff!”. For discipline we do not distinguish between computer generated or person generated correspondence. The punishment may change if it’s on the computer because they’d lose computer privileges due to the AUP.

You’re not going to be able to stop it. A student could simply fire up telnet and use your existing mail server to send email to whoever they want, saying anything they want.

No access to telnet on the machine? Then throw up a Java telnet client on any old web host and access it from there. Actually, if I wanted to get around a school’s filters, this is the route I’d probably go. Once I get SSH somewhere, I can get full access to the Internet, and it only requires port 80, a web browser, and Java. (This is what I use at places that have network access locked down. I open a SSH tunnel over port 443 to my home computer, and then have full access to anything on the Internet.)

Not only is email use part of the State of Ohio Technology Standards, it is our job as teachers to educate the students on the proper use of email. How to use it, what’s appropriate, etc. Part of the problem with the garbage that students send through email is that they’ve never seen anything else. It’s pretty foreign for them to see an email message with proper spelling, grammar, and punctuation. (I hope I have everything correct in this post! :-)

I bet you have students right now using a free email services, ssh tunnels, etc.

We like to think we have things locked down, but unless you’re working for the NSA, you do not have it locked down. Education of the students, punishment for inappropriate behavior is a good way to go. We as Technology Coordinators we have a habit of putting up technological road blocks instead of solving the real problems.

Thunderbird Email

End of year humor

Exempt Those Exams!