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.
plaâ¢teau. 1. a land area having a relatively level surface considerably raised above adjoining land on at least one side. 2. a period or state of little or no growth or decline, esp. one in which increase or progress ceases: to reach a plateau in one's career. 3. to reach a state or level of little or no growth or decline; stabilize. platel flat object, diminutive of plat plate ]. (plÄ-tÅâ²).