Login   |   DEN National Blog   |   Educator Network   |   Discovery Education   |   About the DEN

Student Discussion Boards

My district has recently installed Microsoft Sharepoint. This is a dynamic tool (albeit from the MotherShip) that allows me to create and control groups where users can collaborate though shared documents, discussions boards, blogs, and wikis (and many other features).

My initial observations of Sharepoint made me realize that it has a distinct Microsoft footprint - heavy on tools, but clunky to use. It reminds me of that spoof video fantasizing if Microsoft had packaged the iPod. In any case, I futzed around with it for a while until I was semi-satisfied.

I have to admit - the discussion board is a powerful tool. It engages my students on a level that they would not comfortable with in the classroom. It challenges them to raise questions they would not ask in class. It actually brings more discussion into the classroom. And this was only after a week of discussion. (NOTE: the power of a discussion board is not new to me, but this is the first time I am able to use one under my district’s IT reign).

This is exactly a tool I have been looking for, as I have a colleague in Sweden who wants to have our classes collaborate on a project. Since SKYPE is blocked, this would allow the students to actually have that collaboration - supervised by me and my Swedish colleague.
Sharepoint is quite powerful in that it allows multiple configurations for its users with many layers of permission. There are a few no-brainers that I already have setup to protect my students. First - they can only post, but can’t edit or delete their entries. This helps to reinforce the idea that once something is posted on the internet, it is always there. Secondly, I don’t allow anonymous outside registration either - outside registration would have to be added by me or would have to be requested.

But I am not clear how to setup other student permissions/identities and if I should allow outside access for viewing. I have a few options:

  1. Lock down the site so that ONLY students in my class can see and participate in the discussions
  2. Lock down the site as above, but allow it to be viewed by any student or teacher in the district
  3. Allow outside viewing, but protect student identities - make them create unidentifiable usernames
  4. Other options?

If you use student discussion boards, what advice do you have? What are the benefits and drawbacks of these configurations? I want students to be safe, feel free to speak their mind, but I also want to emulate the outside world as well.

You can see what I’ve done (and what the students have done) so far. Their identities are protected - so I am currently using option #3. Most likely, these settings will change in the future. [Link]

Digital Photo Frames Redux

The use of digital photo frames to show slideshows is nothing new. But while I was setting up our house for Christmas (tree, lights, etc), I noticed the digital photo frame in the family room that has been repeating the same family pictures for the last 11 months (it was a 2006 Christmas gift).

Immediately, I realized that it could easily be used for another Christmas decoration. So I went to Flickr, searched for “Christmas” and found a slew of high quality, general Christmas pictures. After realizing that my frame only recognizes JPEG’s, I selected only those files - and ones that were shot horizontally (they look better in the frame than vertical ones).

Here is the result:

So I was able to create a temporary, yet dynamic Christmas slide show (interspersed with family pictures at Christmas). Beyond using this idea for other holidays and special days, I realized that I could do the same thing in my classroom. Imagine topic-specific pictures that can showcased to peak curiosity, engage discussion, and generally highlight the topic at hand. These pictures can easily be changed by swapping out memory cards, so it would be fairly easy to get it ready for several lessons over a school year.

As digital photo frames are getting pretty cheap, they can easily be purchased for the classroom. Or, if you are like me, then your old electronics end up in your classroom. I might have to upgrade mine at home and use my old one at school!

Rate of Reaction Videos

Inspired by Dale Basler’s stop-motion video project in physics, I recently had my freshman biophys students make videos that examine the factors affecting the rate of a chemical reaction.

We used a lab from an Addison-Wesley Chemistry lab manual entitled “Factors Affecting Reaction Rates”. This lab was ideal, as the instructions are already neatly divided into 4 parts, whereby each part examines what can affect the rate of a chemical reaction (temperature, concentration, surface area and use of catalyst). Students were divided into 8 groups of 3 (2 groups for each concept).

These were the guidelines for the videos:

  • 1-2 minutes in length
  • Describe setup & document experiment
  • Discuss results (with graph or data table)
  • Show balanced reaction
  • Discuss concept

This was a 5-day project (2 days in lab, 1 for taping, and 2 for editing in the computer lab). I gave the students just the basics in order to use Windows MovieMaker, and helped them on-the-fly with questions.

Besides the final project, perhaps the best part of the project was viewing them all in class. Not only were we able to discuss the concept in each video, but students also critiqued each video in content and in quality. This evolved into a really productive discussion on how important it is to be able to communicate science effectively.

This turned out to be a great project that the students really enjoyed. The only negative comment I heard was “the reactions were kinda boring” (all kids want fire and flames). Now that I know the students can handle this type of work, my mind is spinning on what movies they can make in the future using other science tools - graphical analysis, digital microscopy and RasMol (molecular visualization software) come to mind immediately.

Here are a couple examples of the students’ work:

Gettysburg Address as Powerpoint

To illuminate how Powerpoint presentations can be abused, Peter Norvig (research director at Google) has recreated Lincoln’s Gettysburg Address as a Powerpoint Presentation. [Link]

My favorite part is the introduction (we’ve all been here/seen this):

Good morning. Just a second while I get this connection to work. Do I press this button here? Function-F7? No, that’s not right. Hmmm. Maybe I’ll have to reboot. Hold on a minute. Um, my name is Abe Lincoln and I’m your president. While we’re waiting, I want to thank Judge David Wills, chairman of the committee supervising the dedication of the Gettysburg cemetery. It’s great to be here, Dave, and you and the committee are doing a great job. Gee, sometimes this new technology does have glitches, but we couldn’t live without it, could we? Oh - is it ready? OK, here we go.

To distill something as profound as the Gettysburg Address into a Powerpoint presentation is utterly ludicrous. Thus, Norvig makes a poignant example of how effective oral communication can get lost in the bells and whistles of technology.

Powerpoint (and other technologies) should be tools that support our teaching – not replace it. That’s something that we as educators need to teach to our kids, and to ourselves. I regularly make a point to preview my Powerpoint slides and remove as much of the text as I possibly can. I try to remember that I am the teacher – the presentation isn’t.

Bad Behavior has blocked 37 access attempts in the last 7 days.