The document discusses models for effective instructional design. It describes Bruner's three-tiered model of learning that progresses from concrete to pictorial to symbolic. It also outlines Edgar Dale's Cone of Experience, which arranges learning resources on a scale from direct experiences to abstract symbols. The document provides questions for selecting instructional materials and discusses proper usage according to Smith and Nigel's PPPF framework of preparing, presenting, and following up. Finally, it notes similarities between the PPPF framework and Gagne's nine instructional events model.