Hybrid orbitals are the localized electron model's approximation of molecular orbitals. As a result, hybridization theory is essentially VSEPR in new clothes. As with VSEPR, predicting molecular shape and the type of hybridization is a matter of counting from 2 to 6. What hybridization adds to the picture is sigma and pi bonding. The pi bond enables the student to visualize why multiple bonds count as one effective pair of electrons in VSEPR. Although the pi bond is localized between atoms, it gives a sense of what the delocalized molecular orbital might be like. Hybridization does not actually occur, but it is part of the curriculum for the SAT II, and is typically taught in honors level chemistry. This Powerpoint presentation describes the logic of hybridization theory and how it is used to explain bonding and predict molecular shape. The comparison between VSEPR and hybridization is summarized.
Free worksheets for this topic are available on my website at http://www.evanschemistrycorner.com.