3. Results
The findings of how problem solving strategies developed in experiment and control groups were presented below. Open-ended questions were asked to determine the differentiation of the making pattern-schema strategies in control and experiment groups. The mean of the making a drawing-diagram strategy in experiment and control groups are 1,54 and 0,53 in sequence. The t–test was used to determine whether the difference is significant or not, and calculated 3,22 t-statistic is found significant in 0,05 level. This indicates that the training about the making a drawing-diagram strategy is effective on experiment group. The samples related to the making a drawing diagram strategy is shown in Figure 1.