Table 8 Responses: accuracy between contexts (one student or class) ( n  = 85)

0

Uninterpretable

Good enough.

1

Nebulous comments on difference

No because people kept getting measured and it was different each time.

Unexplained numerical values

At least 95%.

2

Measuring tools and how used

I think the [class] results are accurate because we were measuring on a flat surface and the tape was put in place accurat[e]ly.

Reliability of person measuring

Yes they [the class] will be [more accurate] because the teachers measured it in the second lesson.

Experience gained

Yes, I think they will be because now we have had practice at measuring we might be more accurate than last time.

We have learnt more about measurement.

3

Number of measurements*

I think it [class] wasn't really accurate because we measured S. a lot of times and for our class we only measured ourselfs [ourselves] 1 time.