Answered

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A school principal wants to observe how the natural circulation of air affects classroom learning. The principal randomly chooses a group of students of the same age and grade and places them in a room with open windows. The test scores of the class are recorded and analyzed at the end of the semester.

How could this observation be changed into a valid experiment on the effects of air circulation?

A. by adding an identical classroom and opening the doors of both classrooms
B. by adding an identical classroom and allowing students to use electric fans in it
C. by adding an identical classroom that has adjustable windows
D. by adding an identical classroom and closing the windows of both classrooms

Sagot :

GinnyAnswer

Final answer:

To conduct a valid experiment on the effects of air circulation in a classroom, adding an identical classroom with adjustable windows is the best choice to compare the impact of natural air circulation.


Explanation:

To conduct a valid experiment regarding the effects of air circulation in the classroom, Option C would be the best choice: by adding an identical classroom with adjustable windows.

Adding adjustable windows in the identical classroom allows for controlled changes in air circulation, creating a suitable experimental setup free from external factors like electric fans or closed windows.

By comparing the test scores of the classrooms with and without adjustments to air circulation, it ensures a more accurate evaluation of how natural air circulation affects classroom learning.


Learn more about air circulation in classrooms here:

https://brainly.com/question/43130107


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