Paths, consisting of straight segments, are measured with 6 inch rulers. This exercise is followed by an exercise in which curved paths are measured by matching to a length of string and measuring the string. The second chapter on measurement opens with the introduction of a centimeter ruler. The students draw lines having a given centimeter measure. Students then measure items in centimeters and decide if they are less, more or the same as a decimeter.
Perimeter is defined and measured for very simple shapes.
No fractional units are used. Laying objects along the perimeter and counting them. Area is introduced but not named as such. Students do exercises in which they discover how many 1 inch squares fit on given rectangles. Chapter 22, the final measurement chapter, introduces cups, pints and quarts, with one set of exercises in which children break a given set of pints or quarts into cups.