Copyright © Allyn & Bacon 2008 POWER PRACTICE Chapter 4 Digital Technologies in the Classroom START This multimedia product and its contents are protected

Copyright © Allyn & Bacon 2008

POWER PRACTICE

Chapter 4

Digital Technologies Digital Technologies

in the Classroomin the Classroom

START

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Question 4.1

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What is a scanner and what are the features a teacher should look for in a scanner?


A scanner converts hard copy images to digital graphic or text files. A flat bed scanner that lets you scan images from a book is the most useful. The scanning software that comes with the scanner should also include OCR software to convert scanned pages into a word processing file.

Q4.1 Answer

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What is a scanner and what are the features a teacher should look for in a scanner?


How do digital cameras differ from photographic cameras?

Question 4.2

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Photographic cameras store pictures on light-sensitive photographic film. The film must be developed by a photo shop. Digital cameras store digital images on a storage device, such as a RAM card or disk. They also let you preview and delete pictures while taking them. Images are downloaded to a computer to be printed out.

Q4.2 Answer

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How do digital cameras differ from photographic cameras?


How is a graphics tablet useful in a classroom?

Question 4.3

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Q4.3 Answer

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A Graphics Tablet is an input device that lets you use a stylus to draw on a pressure sensitive electronic pad. It is useful for students to create and edit artwork and gives them much more control than would a mouse.

How is a graphics tablet useful in a classroom?


Question 4.4

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What are sound input devices and how are they used in teaching?


Q4.4 Answer

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Sound input devices let you record sound and save it as a digital file. Most computers come with microphones that plug into the sound card of a computer. Students can record commentary or sounds to add to their presentations.

What are sound input devices and how are they used in teaching?


Question 4.5

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How is a PDA useful as a classroom management tool?


Q4.5 Answer

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Teachers can use Personal Digital Assistant’s handwriting recognition software to make notes on lessons, record student behaviors, and track appointments. The software converts the handwriting into a word processing file for further use.

How is a PDA useful as a classroom management tool?


What would be the best use of a touch screen device?

Question 4.6

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Q4.6 Answer

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Touch screens let you enter commands by touching icons on this special monitor. They are best used for issuing commands, entering limited data, or for physically impaired students. They are not useful for inputting large amounts of complex data.

What would be the best use of a touch screen device?


Question 4.7

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What advantages does an electronic whiteboard have over a traditional whiteboard?


Q4.7 Answer

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An electronic whiteboard can capture a digital image of whatever is written on its surface. It can also be used to display computer images. The advantage is that it is more versatile and can reproduce images even after they have been erased.

What advantages does an electronic whiteboard have over a traditional whiteboard?


Question 4.8

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What is a data projection unit used for in the classroom?


Data projection is the display of digital images onto a screen. These projectors let teachers share their monitor image with their entire class. They can display video or computer images.

Q4.8 Answer

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What is a data projection unit used for in the classroom?


Question 4.9

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Why would a teacher choose a scan converter over a data projector?

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Q4.9 Answer

While both display digital images to large groups, scan converters do so by converting computer images into analog so they can be viewed on a TV monitor. While the resolution is not as good, the cost of a scan converter is just a fraction of the cost of a projector.

Why would a teacher choose a scan converter over a data projector?

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