English Skills with Readings 8th Edition by John Langan

Exercise 15

This activity will sharpen your sense of the classifying process. In each of theten groups, cross out the one item that has not been classifi ed on the same basisas the other three. Also, indicate in the space provided the single principle ofclassifi cation used for the remaining three items. Note the examples.
Water Household pests
a. Cold a. Mice
b. Lake b. Ants
c. Hot c. Roaches
d. Lukewarm d. Flies
Unifying principle: Unifying principle:
Temperature Insects
Mattresses
a. Double
b. Twin
c. Queen
d. Firm
Unifying principle: