Research shows that teacher effectiveness is the single most important school-based factor in student success. Students who have highly effective teachers for three years in a row will score 50 percentile points higher on achievement tests than students who have less effective teachers three years in a row (Sanders & Rivers, 1996).
A cuticle /ËkjuËtÉªkÉl/ , or cuticula, is a term used for any of a variety of tough but flexible, non-mineral outer coverings of an organism, or parts of an organism, that provide protection. Various types of cuticle are non-homologous, differing in their origin, structure, function, and chemical composition.
The cuticle plays an important role in the health of your nails. They provide a protective cover for the tissue that grows new cells that build the nails. As you know, your nails are constantly growing -- that's why you have to keep clipping them. They are made of a hard type of protein called keratin, which serves as a protector for your fingertips [source: Mayo Clinic ]. The cuticle protects the new, soft keratin as it emerges onto the nail.