Any teacher who begins employment on August 21, 2014 or after, will be set up to receive 20 paychecks. They will not be eligible to receive summer paychecks (24 paychecks option) for the 2014-2015 school year.
Rounding means making a number simpler but keeping its value close to what it was. The result is less accurate, but easier to use. Example: 73 rounded to the nearest ten is 70, because 73 is closer to 70 than to 80. But 76 goes up to 80. There are several different methods for rounding, but here we only look at the common method, the one used by most people.
A square is a flat shape, in one plane, defined by four points at the four corners. A square has four sides all of equal length, and four corners, all right angles (90 degree angles). A square is a kind of rectangle. To figure out the area of a square, you multiply the length by the width. Because the length and the width are always the same, you could also say that you square the length of any one side of the square (that's why they call it the square).