What are Projected Materials?

• Projected materials enable educators to convey information to large numbers of people at the same time. However, such materials have to be prepared carefully and may need to be prepared professionally.

In all cases, they require three things:

• the material

• the projector

• the screen

Document Camera• Document cameras, also known as visual

presenters, visualisers (in the United Kingdom), digital overheads, or docucams, are real-time image capture devices for displaying an object to a large audience. Like an opaque projector, a document camera is able to magnify and project the images of actual, three-dimensional objects, as well as transparencies.

Overhead Projector• Overhead Projector

–Student use:

•Display work to the classmates

–Teacher use:

• Versatile and inexpensive

•Use of transparencies that are projected on the wall

Slides• Photographic slide or transparency, a positive

photograph used for projection

• Microscope slide, a thin glass sheet used to hold objects for examination

• Slide (form), a slide-out mobile phone form factor

• Evacuation slide, an inflatable slide used to evacuate an aircraft

• Slide rule, a simple analog calculator

• Jakarta Slide, defunct Content Management System software

• Pistol slide, the upper half of a semi-automatic pistol, containing the barrel, sights, and ejection port

• Slide edit, a video editing term for moving a video clip around in a timeline

• Linear-motion bearing, a bearing designed to provide free motion in one dimension

As a future teachers….• You must know that when making a Powerpoint

Presentation, always used contrasting colors

• Example:

• When using dark-colored background, the text must be in light colors

• The standard font size for a PowerpointPresentation is 32.

• The standard line per slide is 9.

Digital Images• A digital image is a numeric representation

(normally binary) of a two-dimensional image. Depending on whether the image resolution is fixed, it may be of vector or raster type. By itself, the term "digital image" usually refers to raster images or bitmapped images.

Terminologies for Digital Images

• Raster images have a finite set of digital values, called picture elements or pixels. The digital image contains a fixed number of rows and columns of pixels.

• Pixels are the smallest individual element in an image, holding quantized values that represent the brightness of a given color at any specific point.

Pixelated Photos

Unpixelated vs. Pixilated

CD-ROM• A CD-ROM is a pre-pressed optical compact

disc which contains data. The name is an acronym which stands for "Compact Disc Read-Only Memory". Computers can read CD-ROMs, but cannot write on the CD-ROM's which are not writable or erasable.

• The Yellow Book is the technical standard that defines the format of CD-ROMs. One of a set of color-bound books that contain thetechnical specifications for all CD formats, the Yellow Book, created by Sony and Philips in 1988, was the first extension of Compact Disc Digital Audio. It adapted the format to hold any form of data.

Photo CD

• Photo CD is a system designed by Kodak for digitizing and saving photos in a CD.

DVD CD• DVD (sometimes explained as "digital video disc" or

"digital versatile disc"[5][6]) is a digital optical disc storage format, invented and developed by Philips, Sony, Toshiba, and Panasonic in 1995. DVDs can be played in many types of players, including DVD players. DVDs offer higher storage capacity than compact discs while having the same dimensions.

Digital Camera• A digital camera (or digicam) is a camera that

encodes digital images and videos digitally and stores them for later reproduction.[1] Most cameras sold today are digital,[2] and digital cameras are incorporated into many devices ranging from PDAs and mobile phones (calledcamera phones) to vehicles.

Digital Scanner

digital scanner -an electronic device that generates a digital representation of an image for data inputto acomputer