1. Manual choice. In this case trajectory is determined trained independently by a mark of numbers of modules, blocks, lessons.

2. Test choice. In this case trajectory is determined automatically by results of testing on all volume of an educational material. Thus trajectory of training includes those lessons, on which were received unsufficient quantity of the correct answers.

3. Full choice. In this case trajectory is included all volume of an educational material of the given discipline, including all lessons, blocks and modules.