The purpose of this study is a time dependent analysis for learning difficulties of sixth grade students in solving problems that require calculating of swith fractions. The study, adopting the screening model, consisted of a total of 148 students, including 80 female and 68 male students at the sixth grade. Data was collected using an assessment tool consisting of 12 open-ended questions. The findings show that the learning groups of 148 students were behind the value closest to the full learning level by a score of 0.013. K1 student reached the lower limit of 0.987 specified for the full learning level in a period of 1.8 course hours, K58 student reached this limit in 2.49 course hours and K148 student reached this limit in 11.17 course hours. The learning amount of 0.999, which is the closest value to the full learning level, was reached by the learning group in a period of 6.4, K1 student in 3.53, K58 student in 5.81 and the K148 students in 37.70 course hours. Moreover, as there was a decrease in the area under the curve belonging to the learning level-time graphic, there was also a decrement in the number of learning difficulties that the learning group encounters before. As a result of the study, it was recommended that it is possible to determine the closest course periods for the full learning level for each of the gains found in all levels of education and all curricula.