As cerebral knowledge is gained, prior to being able to label the experience or having a motor response to it, the knowledge exists only in the mind. Rote cerebral knowledge may be taken in through any on the senses or it may be innate. Understanding cerebral knowledge organizes this knowledge placing experiences into categories. It may also attach values to the experiences. Creating cerebral knowledge imagines new possibilities.
Cerebral knowledge is the foundation of the other two forms of knowledge.
Declarative knowledge is that which is declared, expressed, or communicated. It includes speaking, writing, drawing, or acting to express information about something. It differs from procedural knowledge in that the knowledge is being expressed through and not contained within the action of speaking, writing, drawing, or acting. At the understanding and creating levels it is describing as opposed to doing. The action contains the knowledge, rather than being a tool to communicate separate knowledge.