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Online Product Catalog: 3M™ Overhead Projectors: Tips for Teachers
3M™ Overhead Projectors Benefits:
- Designed to withstand years of rigorous classroom activities.
- Engineered for long lamp life, so you change lamps less frequently to save money on lamps. The lamp changer is designed to prevent premature lamp failure.
- Full Product line, 20 different models to choose from. 1700 Series offers a dependable value priced projectors. 1800 Series, the Performance Series, offers good looks, unique features, and top-of-the-line performance. Our new Budget Series is specially designed for classrom use. The Portable Series is easy to use and compact in design - essential for the traveling presenter.
- A quiet fan does not distract your audience.
- Excellent customer service is just a phone call away (1-800-xxx-xxxx), M-F 8-5 CST. Our Customer Service Representatives are ready to assist you if for any reason you need help with your projector.
For longer lamp life:
- Turn off machine and let cool if necessary, open compartment.
- Installation: Hold lamp with clean cloth. Wipe off fingerprints before turning on the projector.
- Don't use a scratched lamp.
- Don't twist lamp. Pull old lamp from socket, and push in new lamp.
- Socket condition affects lamp life: replace socket if deteriorated.
- If available, use low or dim setting to conserve lamp life.
(Most 3M Overhead Projectors are engineered for double lamp life.)
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Learning is easier with visual materials. Make sure your teaching material reflects this as well. Here are some easy ways to use your overhead projector in this manner.
COLOR Transparencies can be made on ink jet or color laser printers. If your material can be printed on paper, then it can also be printed on transparency film.
GRAPHICS Using graphics such as maps, pictures and drawings add interest and hold student's attention. All of these items can be printed on transparency film.
INTERACTIVE Make your teaching material interactive by doing some simple things like creating "fill-in-the-blank" exercises and using Post-It® Notes to cover answers or surprises.
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 Set up your classroom so that everyone can see the screen. See the diagram below for one way to set up a classroom. The screen in the corner prevents the speaker and the projector from obstructing the students' view.
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COMPONENTS AND OPTIONS
Before purchasing or using an overhead projector, it is a good idea to become familiar with the following components and options.
- Lenses: Overhead projector lenses come in three different variations: singlet, doublet and triplet. The image projected will get sharper as your lens quality increases (singlet is the most basic lens; triplet is the most advanced).
- Brightness: A projector's brightness is measured in lumens. There is a wide range of lumens available. Lower lumen models work best with black and white images. When using color, choose an overhead projector with high lumens. Choosing a projector with a high/low switch enables you to regulate the amount of light projected. A low setting increases lamp life, and therefore reduces the cost of replacement lamps.
HEAD TYPES
CLOSED Lenses and mirror are enclosed to keep out dust and fingerprints.
OPEN Lenses and mirror are not enclosed.
INVERTED This is a version of the open head. An inverted head lowers the projector height so it is easier to view the screen. |
