Tip & How-To about Office Equipment & Supplies

Using a Document Camera in the class room

There are times in a classroom when using a regular projector or transparency projector just aren't the right tools for the job. In these cases you might consider using a document camera to project a paper on to a screen. The main benefit for this method of presentation is when you are presenting something that you will be drawing on, but there are also other benefits that it can be used for.

There are many features on document cameras that many beginning users don't know about or take advantage of. Taking advantage of the features can make you a better presenter and a better teacher.

Document cameras are able to be used as a live camera. If you have students making a lot of presentations and if your document camera has a swivel head you can use it to project the student on to the board. This will make it easier for students in the back of the room to see the presenting student.

Using the document camera as a live camera can have more benefits than just projecting on the screen. Most document cameras have the ability to capture images, this can be useful for documenting a students progress and projects. It can also be used to show parents how their child is doing in school at parent teacher conferences.

Some students I have found have a fear of presenting and prefer to record themselves and play the video to the class. With the document camera you can record the students presentation and then play it back in class.

It is unavoidable that occasionally students will miss classes and it can be very difficult for them to catch back up especially in math and science courses. Using a document camera you can record your lessons and create short videos that explain concepts just as it was presented in class. These videos can be useful in catching up students because they will see the video just as if they had been in class.

A side from helping students to success in class document cameras can be used to engage students in class. In social studies a blank map can be placed under the camera and projected on a white board, students can be called up to write on the board. The same can be done by projecting lined paper so they can write straight, or the math equations to be answered on the board.

Using a document camera in a classroom the options are endless. There are hundreds of things that can be done and there are always more to be discovered.

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how to fix a jammed cooling fan


Opening the case is simply a matter of removing the case screws and opening the case. It\'s not difficult. Just be aware of small parts that may come loose in the process.



A few good tips:



  1. Have a clear work space with enough room to set out the parts as they are removed


  2. Projector cases often use a variety of screw lengths and sizes. Draw a map of the projector and place the screws in their positions to help you remember where the screws go when it comes to reassembly (see diagram)


  3. Take pictures for reference later


  4. It might make it easier if you remote the lamp first. Remember, it\'s important not to touch the lamp or any glass part with your bare fingers. It will cause black spots on the lamp and possibly premature failure


  5. Don\'t force the case closed on reassembly. Check for parts that aren\'t seated correctly.


59356c1d-206f-410f-bcd0-d8aa709b88da.jpg



Don\'t bother trying to repair the fan. These are often MagLev types and it\'s much easier to just replace them with an equivalent part. Here\'s a 5000 pound sterling projector on which I replaced the fan.





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Sep 04, 2014 | Dell 4210X DLP Projector

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kodak carousel 760h projector


The auto-focus system in Kodak slide projectors is really an auto-measurement system: One set manually, the system is supposed to maintain that distance on all subsequent slides. Correct orientation of the slides is that they are all placed in the slide tray in the SAME direction (the matte side of the transparency facing toward the screen). The measurement is from the FRONT of the slide transparency to the BACK of the projection lens. REPAIR calibration of the system requires 2 special tools: a RANGE SLIDE and a TARGET SLIDE. These tool slides and the calibration procedure SHOULD be available from: www.micro-tools.com They purchased all remaining repair parts from Kodak when Kodak stopped supporting slide projectors. Good Luck !! Jim

Apr 30, 2014 | Office Equipment & Supplies

1 Answer

I work at an elementary school and the multimedia projectors are hung from the ceiling (a suspended ceiling) in a wooden tray and hanging by chains. Is this a wise choice?


First suggestion is checking to make sure that the tray/chains are secure - that it's not going to fail at at a point of connection either at the ceiling or point where the chains fasten to the tray. The tray must be strong enough for the weight of the projector (most InFocus classroom projectors are not that bulky and heavy).
Hanging anything with weight from the suspension ceiling braces is not recommended. If possible, having the wire/chain continue thru the ceiling panel (a small inconspicuous hole can be made through the panel) up to actual ceiling joists or whatever material the ceiling system itself is fastened to is best & the most secure. I've used steel aircraft cable (available at any Home Depot or hardware store) in place of chain, partly because it only requires a small pencil-sized hole thru the ceiling panel, hardly noticeable.

Most hanging fixtures (theatrical lights, projectors, etc.) have a secondary/backup safety cable or strap system should the main fasteners fail. In this case, if the tray and ceiling connection is secure, a safety strap holding the projector onto the tray so it's not sitting up there loose or able to be knocked out at all should be used. This also will help keep the projector's aim aligned to your screen should something bump the tray, you won't have to readjust it. (See this link attached for an example of a strap securing a projector).
(In all cases, if you have a building or school district maintenance administrator or someone who's job description requires them to be aware of state or district safety regulations/OHSA rules, they should be consulted to make sure you're following any safety issues that may apply specific to your classroom/student needs.)

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NEC NP 1150


The temperature in the classroom is to hot. Turn down the
temperature in the classroom or get a small fan and place it near the
projector. The projector is running at border line and just needs a few
degrees of cooling...

Jul 20, 2010 | NEC NP1150 Projector

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3M S151 Projector for the classroom


You will need to have a dvi to vga converter. If you have a Macbook, it is a mini dvi to vga. You can get this adapter direct from Apple for about $20. A wireless connection is not available with this model projector.

Dec 01, 2007 | 3M MP 8640 Multimedia Projector

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