Digital Projector, LCD Projector - How to Use it Effectively in the Classroom

!±8± Digital Projector, LCD Projector - How to Use it Effectively in the Classroom

A few years ago, we bought a digital (data) projector for our classroom. Sure, our school had a projector on a media cart, but to be perfectly honest, it was inconvenient to have to share it with the entire school. (And murder if you had to "wheel" the cart up a flight of stairs.)

We've adopted a balanced literacy approach to explicitly teach decoding and comprehension strategies, and we wanted to use the computer projector pretty much 24/7. So we splurged a thousand bucks and bought our own.

We set up our data projector permanently on a tall filing cabinet. We use the entire side of the classroom wall to project a giant image of the teacher's PC. Pretty much every day, we would use the data projector during our modeled and shared reading lessons, as well as during modeled and shared writing. It was hooked up to the Internet, so we could use it for our media literacy lessons as well.

Pros

Attention-grabbing. After all, we live in a TV generation. (After some initial training, the novelty wears off and you can use the technology more effectively as a teaching tool.) With the right set-up, you can display an image larger than any overhead projector image. Easy to read from anywhere in the classroom. In our class, we aren't projecting onto your typical, pull-down, overhead projector screen. We've covered one side of the room with white paper and created a huge 7' x 10' image. Can model how to effectively use technology. (Spell check, effective searching on line, copyright issues) as well as critical thinking skills. Easy to integrate multimedia into your lessons. Can model comprehension strategies on non-traditional texts (i.e. blogs, wikipedia, website articles, ezines) as well as media texts (i.e. commercials, youtube) Easy to display quickly-changing information on the board (i.e. graphing in Math) If your school has a scanner (and many photocopiers / printers do have a scanning feature), then it's easy to digitize stuff and throw it on the data projector in the same way that you would throw a photocopied transparency onto the overhead projector.
Cons

The biggest draw back is that you can't (easily) write on your documents (compared to an overhead projector). Sure you may be able to type faster than you can write, but there are some things that are better done by handwriting (i.e. revising or editing a piece of shared-writing.) Digital ink can be tricky or expensive. Technical difficulties - technology doesn't always work. Computers crash, hardware fails, bulbs burn-out... all when you least expect it. Expensive. Although the price of projectors are continually dropping, you'll still have to shell out 0 to 00 for a decent, new data projector. Security. We've locked our projector to the desk to prevent theft, but that doesn't mean things can't go wrong. Will you lock it up at night? Take it home on the weekends? Where do you put it when you have a supply teacher covering your class? Insurance and Replacement Cost: Chances are your personal items aren't covered under the school's insurance plan and won't be replaced if anything happens. Better call your home insurance provider to see if your belongings are protected at work.

Digital Projector, LCD Projector - How to Use it Effectively in the Classroom

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Tips For Buying a Multimedia Projector

!±8± Tips For Buying a Multimedia Projector

One the hottest pieces of computer peripheral hardware today is a multimedia projector. You can use a multimedia projector for a multitude of tasks, such as: presentations at conferences, board room presentations, projecting videos on to a wall in your home to watch movies, and more. There are a several types of multimedia projectors on the market today. The major question is which projector you should buy? There are many brands and four major types of multimedia projectors.

Multimedia Projector Brands and Types

There are many brands of multimedia projectors to choose from: Panasonic, Optima, Epson, NEC, Infocus, and many more from which to choose. Multimedia projector types include:

Digital Light Processing (DLP): has deeper black background and more portable Liquid Crystal Display (LCD): better for color TFT (Thin Film Transistor) Active Matrix: a form of LCD HDTV home theaters: 480i, 516i, 540p, 720p, 180i, 1080p, 1080i, 1125i (i = interlaced video and p = progressive scan)

The major consideration is the purpose of the multimedia projector and uses in home or business; this will help you select the features you need. Features to consider include:

Image Brightness: range 130 lumens to 6500 lumens Desired Display Area 5 to 6 feet: 500 to 1000 lumens Desired Display Area 8 to 10 feet: 1000 to 1500 lumens Desired Display Area 12 to25 feet: 2000 lumens or more Wireless: remote operation from computer Digital Zoom: for large room projections Keystone Correction: compensates for projectors position not being perpendicular to the screen Slim Size: business portability Projector Mount: needed for permanent installations, ceiling or wall Bulbs: typical UHP, UHE, Halide lamps, 1000 to 4000 hours, chose long life Business Use: movie clips, animation, photos Home Theater: LCD, HDTV, high resolution, high contrast, brightness 1000 to 2000 lumens

Resolution is the number of pixels that the projector is capable of displaying. Projectors with greater the resolution produce a better quality projector image because there are more pixels per square inch. A projector with less resolution will have a grainier picture, since there are fewer pixels per square inch. Resolution comes in a variety of selections; your choice of resolution is based on your use of the projector.

For basic power point presentations only, you can use a low resolution projector. If you use a lot color and videos, you will need a high resolution projector. Projector resolution ranges from 854 x 480 to 1280 x 1024.

Contrast is the ratio between the lightest and darkest areas of a picture. You will want to select a multimedia projector with a contrast 400:1 or better. Contrast ranges from 350:1 to 6500:1.

Buying a Multimedia Projector

Once you have narrowed your multimedia projector choice(s) visit your local store and check out its features:

Projector Controls: ease of use Remote Control: ease of use Bulb: long life, bulbs are expensive Connections: cables for PC or MAC, DVD Player, Cable box, Satellite box Mounting Bracket: if needed for permanent installation Wireless: compatible with your computer Operation: salesperson demonstrate use and watch example projection quality Sound: is the fan noisy Size: size does matter when it comes to portability Weight: permanent installations are not really concerned, heavier models are not suitable for portable uses Carrying Case: provides protection when dragging through airports, etc. Prices: range from less than 0 to 000 and more

Resolution and Contrast Considerations and Features.

Tips For Buying a Multimedia Projector

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