Julie Nagel, a teacher in the Casa Grande Elementary School district, calls Anticipatory Set and Closure the two bookends of a lesson. This is certainly supported by research that says we are most likely to remember what we hear at the beginning of a lesson and at the end of a lesson.
Anticipatory Set primes the student's mind for learning by accessing prior knowledge and actively engaging their brains.
Resources
Anticipatory Set (And an excellent review of EEI)
Web Site created by Geneva Baker