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MERLOT II


    

Peer Review


Encryption

by Corinne Hoisington
 

Ratings

Overall Rating:

5 stars
Content Quality: 3.5 stars
Effectiveness: 3.5 stars
Ease of Use: 3 stars
Reviewed: Feb 21, 2006 by Information Technology Editorial Board
Overview: Under the topic of Internet security, this PowerPoint presentation introduces a
few basic encryption methods at a very high level. The presentation quickly
covers encryption, sniffers, strong keys and SSL. The site provides a general pictorial description of data encryption. A very high level overview of some encryption technologies.
Learning Goals: After viewing this presentation, the student will be aware of a few ways to stay
"safe" on the Internet. The student will understand what encryption is and how it works.
Target Student Population: The student level of secondary and undergrad could benefit from this
presentation. High school students could also use this material.
Prerequisite Knowledge or Skills: No prerequisite skills are required.
Type of Material: No prerequisite skills are required.
Recommended Uses: This could be used as a warm up to pique the student's curiosity and render
them more attentive to the material to be presented in the lesson.
Technical Requirements: This presentation requires a PowerPoint runtime reader, Microsoft Office
Animation Runtime add-in and a special codec for Windows Media Server.

A computer with a browser, and connection to the Internet is required to access
the presentation.

Evaluation and Observation

Content Quality

Rating: 3.5 stars
Strengths: The material supports both the visual and audio learner. The presentation can
be controlled and paused. The topics to be discussed are listed below the
controls and highlighted as they are discussed. There is a good use of graphics
and transitions to keep audience attention.

There were links on one slide to glossary and further information on PGP.

Good information but video quality is slightly distracting. Link to PGP info is
very good.

Nice design with appealing graphics.
Concerns: This material might not be suitable for the hearing challenged student, as the
slides do not reflect the audio presentation enough to be used as stand-alone
without the audio.

"Talking head" can be distracting and take away from content.

Images and bulleted points within slides do not contain much information. Poor
audio quality.

Potential Effectiveness as a Teaching Tool

Rating: 3.5 stars
Strengths: The pacing of the presentation along with the quality visuals captures the
attention. The topic list helps the audience to keep track of where they are
within the presentation. Good, simple supplemental material.
Concerns: The audio ran a bit quick. There is no additional information other than a link
to PGP in a slide.

Ease of Use for Both Students and Faculty

Rating: 3 stars
Strengths: The presentation controls are standard and contain explanation when moused over.

The content was clear and well presented. If browser is compatible, nothing is needed to use the material.
Concerns: The proper add-in and codec is required for quality audio.

On LAN speed, the download was 2.5 minutes. The estimated download for a 56 K
dial-up user can run to seven minutes.

Long download time due to size of material and number of items. May dissuade
use.