1. Transforming classrooms with

2. Today’s outline  Description of technology  Words to know  Specific products  Uses in the classroom or library

3. Digital Video Projector A projector that uses digital technology to enlarge video or static images onto a blank wall or screen to share information with many people in a room.

4. Digital Video Projector

5. Words to know  Brightness Measured in lumens Choice depends on ambient light For classrooms: at least 1500, 3000 is better

6. Words to know  Resolution The number of pixels a screen portrays, expressed as screen width by height Picture of a projector is best when it matches that of the source monitor. Most projectors are either SVGA (800 x 600 pixels) or XGA (1024 x 768).

7. Other factors  Contrast: higher for better pictures  Aspect ratio: either 4:3 or 16:9  Lamp life  Size and weight: consider portability  Remote controls

8. Projection technology choice LCD: Liquid Crystal Display  Light is passed through liquid crystal pixels to project the image  PROS: greater color saturation  CONS: smaller contrast ratio, shadows (“absolute black”) are not as dark, dead pixels more common DLP: Digital Light Processing  Uses micro-mirrors to project the image  PROS: true-to-life colors, high contrast, smooth color transitions  CONS: “rainbow effect”, more expensive

9. Comparing products InFocus IN2102EP $499 Vivitek D825ES $499 Information found on http://www.projectorpeople.comhttp://www.projectorpeople.com

10. Comparing products Lower brightness (2500 lumens) Lower contrast (2000:1) Promised lamp life (2500 hrs) InFocus Higher brightness (2600 lumens) Higher contrast (2200:1) Lamp life not published Vivitek

11. Uses for the classroom  Classroom presentations, for students and by students  Collaborative Internet surfing  Computer instruction  Smartboard activities  Videos

12. Uses for the classroom Source: “Multimedia Projectors: A Key Component of the Future.” THE Journal. June 1, 2002.

13. Resources  Boxlight. DLP vs. LCD. http://www.boxlight.com/DLP-Vs- LCD. Accessed September 14, 2009.http://www.boxlight.com/DLP-Vs- LCD  DLP vs. LCD: Guess Who Wins. http://www.youtube.com/watch?v=sfGrWZwiRFU April 3, 2008. Accessed September 14, 2009. http://www.youtube.com/watch?v=sfGrWZwiRFU  Lightbody, Keith. Data Projectors in School. http://www.zardec.net.au/keith/project.htm March 5, 2007. Accessed September 14, 2009. http://www.zardec.net.au/keith/project.htm  “Multimedia Projectors: A Key Component of the Future.” THE Journal. June 1, 2002. http://thejournal.com/Articles/2002/06/01/Multimedia- Projectors-A-Key-Component-in-the-Classroom-of-the- Future.aspx?Page=2. Accessed September 14, 2009. http://thejournal.com/Articles/2002/06/01/Multimedia- Projectors-A-Key-Component-in-the-Classroom-of-the- Future.aspx?Page=2.  Projector Central Buyer’s Guide. http://www.projectorcentral.com/home_theater_buyers_gu ide_0.htm. Accessed September 14, 2009. http://www.projectorcentral.com/home_theater_buyers_gu ide_0.htm.