Layers of Necessity Model¶

Theory · All theories
Evidence · no claims cited

Description¶

The Layers of Necessity Model, developed by Tessmer and Wedman, proposes that designers create multiple layers of instructional design activities depending on the particularities of different design situations. It was developed to understand the practice of instructional design and guide designers in approaching a given project. This study surveyed practitioners to enrich understanding of the model, finding that the majority conform to the principle behind it rather than performing every step every time.

Design Implications¶

Context¶

Requirements¶

• Design situations vary in particularities, so designers must select which ID activities to perform for a given project.

Constraints¶

• The model describes ID practice in projects where not all steps are performed; a small number of model designers follow all steps all of the time.

Target Learners¶

• Instructional designers
• Training managers and consultants

Target Learning Objectives¶

• Understanding and guiding instructional design practice in real projects

Claims¶

Related Theories¶

• Bioecological Model of Human Development

Examples¶

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Key Sources¶

• Winer, L. R., Vázquez-Abad, J. A., & Tessmer, M. (1994). Enriching the Layers of Necessity Model. Paper presented at the Annual Meeting of AERA. https://eric.ed.gov/?id=ED371037