Figure 4: Samples of making a list strategy
During the experimental applications, it is seen that students could use the listing strategy by themselves. In student solutions there were different strategies within the listing strategy. The interviewed students used “ranking from small number to big number (Figure4/c), choosing two numbers and changing their places (Figure4/b), ranking in terms of the first number of the result (Figure 4/a)” sub-strategies. In interview records student explained their listing strategies like this: Sabriye, whose solution is shown in Figure 4/b, said “First of all I chose two numbers; and put one of them at the beginning and the other one at the end. Later I changed their places.” Mehmet, whose solution is shown in Figure 4/c, explained “I wrote the smallest number which was 36. Then I wrote 38, 63 and eventually the biggest number 86.” Elife, whose solution is shown in Figure 4/a, said “I put the one starting with 3, then with 6 and eventually with 8. Later I put remained ones nearby other, the result was 6.”