One of the most common questions students ask during the IB Design Technology IA is how many prototypes they need. Some students build one polished model and stop. Others produce many versions without clear purpose. Both approaches can limit marks.
In IB Design Technology, the number of prototypes matters far less than what you learn from them. Prototyping is assessed as part of design thinking, testing, and iteration—not as a showcase of craftsmanship.
What Is a Prototype in IB Design Technology?
A prototype is any representation of a design idea used to test, explore, or evaluate performance. Prototypes do not have to be final products or high-quality models.
Prototypes can include:
- Sketch models
- Cardboard or foam mock-ups
- 3D printed components
- Digital models
- Partial assemblies focused on one feature
If a prototype helps you test an idea or gather feedback, it counts.
What Examiners Are Actually Looking For
IB examiners are not counting prototypes. They are looking for evidence of iteration.
High-scoring projects show that students:
- Tested ideas early
- Learned from testing
- Made changes based on results
- Improved the design over time
A project with multiple meaningful iterations will always score higher than one with a single “perfect” prototype.
Is There a Minimum Number of Prototypes?
There is no official minimum number, but most high-scoring projects include:
- At least one early prototype to test basic ideas
