The Letter People The Letter People The Letter People is a children's literacy program and the television series based on that program. The term also refers to the various characters depicted in the program and television show. Elayne Reiss-Weimann and Rita Friedman originally created the concept of Letter People to teach beginning readers how to "decode" or "sound out" the consonants and vowels that form words. They embodied the basic rules of phonics into stories about these make-believe characters called Letter People. Each letter of the alphabet had a distinct characteristic to help children learn not only the letter but the sound the
Complete partial order Complete partial order In mathematics, the phrase complete partial order is variously used to refer to at least three similar, but distinct, classes of partially ordered sets, characterized by particular completeness properties. Complete partial orders play a central role in theoretical computer science, in denotational semantics and domain theory. A complete partial order abbreviated cpo can, depending on context, refer to any of the following concepts. Note that "complete partial order" is never used to mean a poset in which "all" subsets have suprema; the terminology complete lattice is used for this concept. Requiring the existence of directed suprema can