Some evidence indicates that sleep supports memory consolidation. Items studied before sleeps are memorized more efficiently than those not followed by sleep. Consequently, we propose a learning management system based on these findings. The system includes an alarm clock, whose alarm is set only if a user answers some questions. The user also has to answer the same questions once the clock has awakened him or her in the morning. We implemented a prototype and conducted a user study with five participants to evaluate the effectiveness of the system.