"This study focuses on the application of differential equations using mathematical models in practice. The authors focused their research on deterministic models (Plevný 2005) (models that do not include random variables) and contain a time factor (dinamic models) (Lukáš 2012) as well. Specific model which is solved by authors is ”The Ebbinghau’s Model of Forgetting” (Jaber 1997). This Model is solved based on results of studies of students at selected ”High School”. The Authors thus created empirical research of forgetting, which will be used for the public. Research of this Study is not offered for the students only, but it can also be benefical at all employers whose employees returning to work after an extended sick leave or vacation. The final model shows that it is much better to learn as much subject matter that will be slowly forgotten. This fact will be shown in primary, secondary and tertiary eduacation as well. We hope the study will encourage pupils and students to continuous learning and overall learning curriculum."