The 1918 flu pandemic, commonly referred to as the Spanish flu, was a category 5 influenza pandemic caused by an unusually severe and deadly Influenza A virus strain of subtype H1N1.
Project Lead The Way (PLTW) is an American nonprofit organization that develops STEM curricula for use by US elementary, middle, and high schools.
plait - a hairdo formed by braiding or twisting the hair. braid, tress, twist. coif, coiffure, hair style, hairdo, hairstyle - the arrangement of the hair (especially a woman's hair) queue - a braid of hair at the back of the head.