Because the classroom is longer and if you use inches it would take to long.
Using meters takes less time.
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Meters are about the same distance as Yards (1 Yard = 3 Feet) and while Yards may be just as convenient, students will have less trouble doing conversions with the metric units.
Let's say a classroom might be 24 feet along one wall, or 8 yards.
Meters are pretty close in length to yards. Although they aren't exactly the same, they're close enough for student usage. So let's say the classroom is also 8 meters.
You can do many things with these 8 yards, and many more things with these 8 meters.
Although students may have more fun calculating by the cumbersome scaling factors of the English system, they will have more to do with SI-prefix units.
It really depends on how old your students are and what you're trying to teach them.
METERS!!!The unit of measurement you would use to measure the width of your classroom is meters.
Meters
meters or yards
I would use a tape measure. This would require one person to help me, since the tape measure would have to be held at both ends. Even if the classroom is longer than the tape measure, I could just mark the full extent of the tape and then measure again from there.
I would use a yardstick, a foot ruler, a tape measure, a meter stick, or a laser rangefinder to make the measurement. After I knew the distance, I could convert it into any convenient unit in order to describe it or report it to others. The most convenient metric units would be either meters or centimeters.
METERS!!!The unit of measurement you would use to measure the width of your classroom is meters.
meters
Meters
meters
Identify the SI until you would use the measured the width of your classroom
meters or yards
The metric unit of the meter would be the appropriate measure of the area of classroom. Calculating area involves multiplying the length (in meters) of the classroom's length and width. Area of the classroom would be in square (^2) meters.
Meters are used for measuring distance. For classroom lenght use meter (m). For classroom floor space use square meter (m*m or m^2). For classroom volume use cubic meter (m*m*m or m^3).
meters-a kilometer would be about 1000 large steps (walking), A meter is one large step
SI UNIT Usually, at a normal classroom size, the tool to use would probably be to measure it in either yards or meters. TOOL A yard stick
You would use meters.
If you mean what units, that would be meters.