In 1956, Benjamin Bloom headed a group of educational psychologists who developed a classification of levels of intellectual behavior important in learning. Bloom found that over 95 % of the test questions students encounter require them to think only at the lowest possible level...the recall of information.Bloom identified six levels within the cognitive domain, from the simple recall or recognition of facts, as the lowest level, through increasingly more complex and abstract mental levels, to the highest order which is classified as evaluation.

Six levels of Blooms :

1. Remembering / Knowledge or recall of data, expresses the natural urge to recall previously learned material. So knowledge, or being told, can be a foundation for very much learning. It provides a basis for higher levels of thinking, but is rote in nature. Insight rides on top of it.
2. Understanding / Comprehension, the ability to grasp meaning, explain, restate ideas, means understanding the basic information and translating, interpreting, and extrapolating it.
3. Application, or using learned material in new situations, involves using information, ideas, and skills to solve problems, then selecting and applying them appropriately.
4. Analysis suggests separating items, or separate material into component parts and show relationships between parts. It also means breaking apart information and ideas into their component parts.
5. Creating / Synthesis suggests the ability to put together separate ideas to form new wholes of a fabric, or establish new relationships. Synthesis involves putting together ideas and knowledge in a new and unique form. This is where innovations truly take place.
6. Evaluation is the highest level in this arrangement. Here the ability to judge the worth of material against stated criteria will show itself. Evaluation involves reviewing and asserting evidence, facts, and ideas, then making appropriate statements and judegments.