I awarded a five for this strand. Criteria D explains a relatively detailed testing strategy, but does not justify it sufficiently.
I awarded a three to this strand. I really struggle to judge this one. Technically, criteria d does evaluate the prototype against the design specification. Unfortunately, that evaluation is "yes" for every criteria.
I awarded a two to this strand. They give two extremely brief improvement ideas, don't go into detail, and don't elaborate on their impact on the overall design
Strand 1 - Justify every testing procedure
Strand 2 - explain why the prototype meets the design spec
Strand 3 - More ideas, more in-depth, justified against the spec, explained in terms of the whole project
The IBO sample.
1. The IBO sample provided more justifications for strand 1
2. The IBO elaborated on why the prototype met the design spec
3. The IBO sample provides clear insights into what can be improved
Overall, I would rate the IBO sample a 7, and the NB sample a 3