Most responses of subjects in the control condition fell in the category "wrong answer and drawing absent on both pretest and posttest" (42%). This category represents a much smaller percentage of responses of the experimental group (19%). One would expect this result because subjects in the experimental condition produced more drawings on the posttest than did subjects in the control condition. The opposite pattern appears in the category "wrong answer and drawing absent on the pre- test, correct answer and drawing present on the posttest." Whereas in the control condition only 2% of the responses belonged to this category, in the experimental condition, 12% did. In this category, improvement on a word problem was directly related to the presence of a drawing. More subjects in the experimental condition than control subjects had successfully tried to analyze a word problem with the aid of a drawing. Many of those attempts failed, however, judging by the percentage of responses that fell into the category "wrong answer and drawing absent on the pretest, wrong answer and drawing present on the posttest."Fifteen percent of the responses of the experimental group were in this category, compared with 2% of the responses of the control group.