The Successive Approximation Model (SAM) is an iterative instructional design model that emphasizes collaboration and flexibility throughout the development process. SAM consists of three main phases and each phase is characterized by cycles of design, development, and review. Here is a brief overview of the three phases. 

Phase 1: Preparation

• In the preparation phase, the focus is to establish the project foundations. This involves gathering information, understanding the goals and objectives, and identifying the target audience. Key stakeholders are identified, and initial collaboration between instructional designers, subject matter experts, and other project team members begins. The preparation stage sets the groundwork for the subsequent iterative cycle. 

Phase 2: Iterative Design

• The iterative design phase is characterized by a series of short design and development cycles. Each cycle includes prototyping, testing, and refining instructional materials. Design decisions are made collaboratively, and prototypes are developed quickly to gather feedback from stakeholders. This iterative process allows for continuous improvement and refinement of the instructional content. 

Phase 3: Iterative Development

• This phase extends the iterative process into development and implementation. Based on feedback received during the design cycles, instructional materials are further developed, refined, and implemented. The iterative nature of development continues until the instructional solution meets the desired standards and effectively achieves its learning objectives. 

The SAM model has several implications for instructional design, influencing how instructional designers approach the development of learning materials. Here are some key implications of SAM for instructional design. 

1. Iterative and Agile Design

   • SAM's iterative nature encourages instructional designers to embrace an agile approach. Designers can quickly cycle through prototyping, testing, and refining, allowing for flexibility and responsiveness to evolving needs.

2.    Flexibility to Change

   • SAM allows for flexibility and instructional designers must be able to adapt to changes in project scope, objectives, or requirements.    

3. Focus on key objectives

   • SAM encourages instructional designers to focus on key objectives in the planning phase. This in turn helps instructional designers to prioritize essential content and avoid unnecessary details. 

4. Continuous Improvement 

• SAM fosters a culture of continuous improvement, with each iteration providing an opportunity to enhance and refine the instructional content based on feedback.