For example, some students when studying the special did not return the knowledge loop article anchovies are learning to forget. Time to bring back new knowledge
For example, some students have started classes and then not come back to review what they learned the cause of forgetting. Must be time to kick out again.
For example, some students just when class came back to review the knowledge learned to ำให้เกิด forgetting. Waste time in the reopening of knowledge again.