inquiry is investigative process which scientist use the build an understanding of the natural world.Recall that this construct is based on repeatable, reliable and observable evidence. Obtaining this evidence involves the use of scientific inquiry skills. While learners may not discover "unknown knowledge" (i.e. new knowledge to mankind) in their own investigations. Current research indicates that many learners are better able to accommodate new knowledge when engaged in inquiry. The Constructivist approach to teaching recognizes that building new knowledge is a personal matter and learners find it is easier to make sense to new experiences when scientific inquiry skills are used. Learning is only accomplished when a person have accommodated the new experiences into his world by making links to existing knowledge and taking ownership of these new concepts. Inquiry skills help learner to operate at higher level in Bloom's Taxonomy of educational objectives. The lowest level skills are observation and measurement which gather space-time relationships (data). Organization of this data involves communication and classification. Explaining the data obtained uses the skills of making inferences and predictions. Generalizing the explanation make hypothesis. Hypothesis are tested by experimenting using skills of problem solving, controlling, variables, critical thinking, creative thinking, and interpreting data to make operational definitions.