You’ve built a eLearning course. The content is solid, the platform works flawlessly… but learners aren’t engaged, retention is low, and behaviour isn’t changing.
The problem? eLearning without structure is just information.
That’s why instructional design models comein—to turn learning into an experience that captures attention and drives real-world impact. From ADDIE to Bloom’s Taxonomy, Merrill’s First Principles to SAM, each model provides a unique way to design for engagement and retention. With so many models out there, how do you choose the right one for your training needs?
Different learning objectives call for different design approaches. Here are some of the most widely used instructional design models and how to apply them effectively.
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ADDIE stands for Analyse, Design, Develop, Implement, and Evaluate. It’s a systematic framework that ensures training is well-planned, effectively developed, and continuously improved. It works best for structured, large-scale learning projects where clear planning and thorough evaluation are essential.
That said, traditional ADDIE can sometimes feel too linear and slow-moving for fast-paced projects. In such cases, more agile approaches—like SAM (Successive Approximation Model)—may be better suited for rapid iteration and feedback cycles.
When to Use ADDIE:
Example:
Developing a detailed employee onboarding curriculum that systematically covers company culture, role-specific responsibilities, compliance requirements, and performance assessments—ensuring each stage is reviewed, tested, and refined before moving to the next.
SAM (Successive Approximation Model) is an agile, iterative approach to instructional design, where feedback loops are built in early and often. Unlike ADDIE’s linear, step-by-step process, SAM allows for continuous testing, rapid iteration, and refinement—making it ideal for fast-paced projects where flexibility is key.
However, without clear structure and planning, SAM can become chaotic. It works best when paired with solid instructional design principles and a clear vision from the outset.
When to Use SAM:
Example:
Creating a responsive product training programme for sales teams, frequently updated based on user feedback, new product features, and shifting market demands—allowing for rapid, real-time improvements while keeping content relevant and engaging.
This model emphasises learning by doing, structured around five core principles that promote deeper engagement and practical skill development:
It’s particularly effective for task-based, hands-on training that requires problem-solving and real-world application. However, if the content is too abstract or lacks context, this model can lose its impact. For it to work well, problem-solving must feel authentic and relevant.
When to Use Merrill’s Principles:
Example:
Designing an immersive customer service training module where learners interact with realistic customer scenarios, practising real-time problem-solving, communication, and conflict resolution to build confidence and capability.
Bloom’s Taxonomy organises learning into six cognitive levels, helping educators and learning designers structure content that moves from basic understanding to higher-order thinking:
This model is best for designing learning objectives that go beyond memorisation and recall. However, many eLearning programmes often remain at the “remembering” level, relying heavily on multiple-choice quizzes instead of incorporating activities that foster application, analysis, and creation.
When to Use Bloom’s:
Example:
Developing a leadership development curriculum that starts with core leadership principles, then builds towards strategic thinking, problem-solving, and high-level decision-making simulations, encouraging learners to apply and create at increasingly complex levels.

It depends on your objectives, learners, and project constraints. Here are a few best practices to make the most of instructional design models:
Instructional design models provide a structured approach to creating engaging and effective learning experiences. Whether you’re designing technical training, leadership development, or compliance courses, choosing the right model can make all the difference.
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