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"Free Technology for Teachers" - 2 new articles

A Science Lesson for Winter Application
What You Should Know About Pings and Traceroutes
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A Science Lesson for Winter Application

Winter temperatures have arrived in Maine. There's a light coating of snow on the ground. And my daughters and I are excited about the start of ski season! While we like all of these things about winter, there is one thing we don't like. That thing is dealing with cracked, chapped, and dry lips. During the winter I go through lip balm like a kid goes through Halloween candy. Perhaps you and your kids have the same problem in the winter.

What causes chapped lips? What can you do to prevent your lips from chapping, besides using lip balm? The answers to those questions and more are found in this Brain Stuff video titled What Causes Chapped Lips? The video is embedded below.

Applications for Education
I appreciate videos like this one because they address questions that many students are naturally curious about. This video can be brought into part of a larger health lesson on the importance of hydration.

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What You Should Know About Pings and Traceroutes

As I wrote in my recent weekly newsletter, using the ping command on your computer is an easy way to check if a website is down or if the problem is with your computer. Using the ping command in the command prompt window on your computer might seem like something only computer science teachers and students should do, but the reality is that any teacher or student can benefit from knowing how to do it because it provides a quick and reliable way to determine whether or not a website is down.

Here's a demonstration of how to conduct a ping on a Mac and here's a demo of how to do it on a Windows computer.

A traceroute shows you all of the traffic hops (connections) between your computer and a destination (often a website, but not always). This information can be useful in determining where the connection between your computer and a destination breaks down. In other words, it's a simple network diagnostics tool. Running a traceroute is also an interesting way for students to see where in the world traffic is going to and coming from. Run a few traceroutes with your students and see if they're surprised by what they see. Here's a demo of how to run a traceroute on a Mac and here's how it's done on a Windows computer.

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