Provide three possible reasons why a teacher might choose to demonstrate the use of a spectral analysis tube with a power source, rather than have the students perform the activity

What will be an ideal response?


Spectral analysis tubes are expensive and can easily be broken. Also, the power source provides electricity for the demonstration. The cost may be too high to provide multiple sets of equipment or there may only be one set of spectral analysis equipment available. In addition, the breaking of glass and the electricity source present possible safety hazards. The demonstration also allows the teacher to show how the equipment should be used.

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The HR manager conducted her evaluation of staff performance across the ten stores.  How many levels of analysis does her study have?

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A method of teaching letter and word recognition involving movement and touch in addition to vision, hearing, and speech is called a __________ language experience

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Education