tell about three different class.
tell about three different class. NVb
The above chart shows and compares the number of students registered at three different classes (math, physics, and chemistry) in 2017 and 2018.
The number for math's attendat rose dramatically from 2017 to 2018, At the same period the figure for student who had been token a chemistry class, fell down by nearly 25 (from about 35 to 20).
Also the pysics class saw a marginal decrease in the number of the students, however the change in this class was not as fast as other two classes and it was moderate change. 
The above chart 
shows
 and compares the number of students registered at three 
different
 classes
 (math, physics, and chemistry) in 2017 and 2018.
The number for math's 
attendat
 rose 
dramatically
 from 2017 to 2018, At the same period the figure for student who had been token a chemistry 
class
, fell down by 
nearly
 25 (from about 35 to 20).
Also
 the 
pysics
 class
 saw
 a marginal decrease in the number of the students, 
however
 the 
change
 in this 
class
 was not as 
fast
 as other two 
classes
 and it was moderate 
change
. 
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