Activities and materials support the lesson objectives; are challenging; sustain students' attention; elicit a variety of thinking; provide time for reflection; are relevant to students' lives; provide opportunities for student-to-student interaction; induce student curiosity and suspense; provide students with choices; incorporate multimedia and technology; incorporate resources beyond the school curriculum texts (e.g., teacher made materials, manipulatives, resources from museums, cultural centers, etc.). Presentation of content includes visuals that establish the purpose of the lesson, preview the organization of the lesson, and include internal summaries of the lesson; examples, illustrations, analogies, and labels for new concepts and ideas; modeling by the teacher to demonstrate his or her performance expectations; concise communication; logical sequencing and segmenting; all essential information; no irrelevant, confusing, or non- essential information.