standard 4: model with mathematics. Expand +. classroom observations: Teachers who are developing studentsâ capacity to model with mathematics move explicitly between real-world scenarios and mathematical representations of those scenarios.
exists and is an alternate of . Functional extinction means that there are not enough live animals (or animal protoplasm) of a certain species for the species to breed and survive.
By Richard Nordquist. Definition. A linguistic term for the end or extinction of a language. Also called language extinction. Distinctions are commonly drawn between an endangered language (one with few or no children learning the language) and an extinct language (one in which the last native speaker has died). See Examples and Observations below.