A. Physical Knowledge
Knowledge of objects in external reality learned by observation and experience with the objects— e.g., a red, heavy ball rolling downhill.
B. Logic-Mathematical Knowledge
Knowledge constructed within the mind of the individual that establishes similarities, differences, and associations between objects, events, or people—e.g., a red and blue bead may be different if the variable under consideration in the mind of the individual is color, or the same if it is based on size.
C. Social-Conventional Knowledge
Knowledge that reflects agreed-upon conventions of society and that could not be reinvented by every generation of learners— e.g., the English language has 26 letters, including 5 vowels and 21 consonants