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 verb [I or T] uk / plÃ¦t / us / plÃ¦t / US usually braid âº to join three or more pieces of hair or string-like material by putting them over each other in a special pattern: 1  She plaited the horse's tail. 2  a plaited leather bracelet/belt. 3  She usually wears her hair in a plait/in two plaits.