Tetrads, Interviews, and Multimedia Presentation

Tetrads, Interviews, and Multimedia Presentation

Tetrad 1: Obsolete Technology: Overhead Transparency Projector


Enhances: Motion projectors were used to show movies.  However, videos were generally not used in classrooms at the time, largely because of the expensive cost of the machines (Saettler, 2004).  The slide projectors allowed for the demonstration of one image at a time, and the costs were relatively lower when compared to motion projectors.  Overhead projectors allowed teachers to make edits on transparencies, which enhanced presentations that make use of editing material.  Overhead projectors enhanced visual aide material like posters, which displayed large images in color.  The light bulb technology was enhanced to have longer usability life.

Obsoletes: Slide projectors allowed for still images in the classroom, which was promoted in the 1930s (Johnson, 2010).  Slide projectors allowed for mass communication of images by projecting that image using a bulb, much like an overhead projector. Overhead projectors make use of transparency films as opposed to slide projectors that use picture slides, much like negative strips for pictures.  Teachers had to prepare their slides ahead of time, and edit markings could not be done with transparency markers.  Slide projectors worked similar to motion projectors except that images progressed one at a time.  Whiteboards and chalk boards are made obsolete with overhead transparency projectors because teachers can now make edits to the transparency film as opposed to writing on the boards.

Retrieves: Overhead projectors reinforced the idea of using visuals in the classrooms to scaffold learning.

Reverses:  Multimedia projectors, document cameras, and interactive whiteboards reversed the overhead transparency projector.  Materials do not have to be placed onto transparency films in order to be displayed.  Interactive whiteboards take this notion further by allowing people to manipulate displayed objects.

Tetrad 2: Emerging Technology: Multimedia Projector


Enhances: The display of information is enhanced.  Static images are no longer the only type of media display since multimedia projectors are connected to laptops that enable the viewing of video files.

Obsoletes: Overhead projectors are made obsolete because it required the use of transparencies.  Multimedia projectors can be used with laptops where special markers and transparency film are not needed.  Motion projectors are made obsolete because multimedia projectors allow users to watch videos.  Also, the quality of the images are improved with multimedia projectors when compared to overhead projectors.

Retrieves:  The multimedia rekindles the overhead transparency projector when showing still images.  The multimedia projector rekindles the motion projector when displaying movies.

Reverses: interactive whiteboards reverses multimedia projectors by allowing interactivity with the images being displayed.  Holographic displays allow for realistic displays as opposed to 2D objects.

Table 1. Participants for Interview

Name Title/Position Employment Date of Interview Why Chosen
A.B. Science Teacher John F. Kennedy High School October 4, 2013 30 years of experience as a teacher
T.F. Librarian/Multimedia Coordinator Price Elementary School October 14, 2013 Multimedia coordinator for school
J.L. History/P.E. Teacher Okkodo High School TBD (has not confirmed meeting date) 28 years of experience as a teacher
C.M. Elementary Teacher Finagayan Elementary School TBD (has not confirmed meeting date) Over 30 years of experience as a teacher

Interview Questions:

There are no IT specialists in the school district.  The option to purchase technology is left to the teachers who vote by content area.  In essence, the teachers are the decision-makers for the technology and supplies they use.

  1. When you were a student, were teachers using overhead projectors?  If yes, approximately what year?
  2. In your teaching career, did you ever make use of overhead projectors?  Why or why not?
  3. What did you like or dislike with overhead projectors?
  4. In your teaching career, did you ever make use of multimedia projectors?  Why or why not?
  5. What did you like or dislike with multimedia projectors?
  6. Are there any perceived disadvantages to overhead or multimedia projectors?
  7. For librarian/multimedia coordinator: Do some teachers in your school still make use of overhead projectors?  Why do you suppose?
  8. For librarian/multimedia coordinator: Why did your school start implementing the use of multimedia projectors in the classroom?
  9. For librarian/multimedia coordinator: How are multimedia projectors used in your school?  Meaning, are the teachers showing images, videos, or other types of displays?

Multimedia Presentation

I have access to Adobe Premiere, so my final product will be produced as a video.  Images from Adobe Photoshop will easily blend into Adobe Premiere.  Text material will be captured as an image or typed into Adobe Premiere.  The final product will be uploaded to YouTube if fewer than ten minutes.  Otherwise, the video will be uploaded to Vimeo.


One thought on “Tetrads, Interviews, and Multimedia Presentation

  1. Hello Sanjay,
    I just enjoyed reading your post because there is so much good information about Ipads and computers. Do your students enjoy using the IPADS in school? This post was absolutely inspiring and interesting. Great Post!

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