The content is what we are used to teach students. And the content should be adjusted appropriately and fit the students in each class, for example, if a student education should teach content is not difficult. And not too much, and should reinforce activities such as games with the knowledge.
Because the children have Attention deficit/ hyperactivity disorder, they must use the game to help draw attention. And if a secondary education teaching content should be difficult to a child at maturity.