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Table 4 Assessment of the modellers-2 evaluation-2 phase

From: Self-evaluative Scientific Modeling in an Outreach Gene Technology Laboratory

Analysis sector Description (score)    Scores  
   Maximum Students’ self-evaluation sheeta Assessment students’ self- evaluation sheeta Assessment students modela
Bases - Four bases are indicated (2)
- Base pairs correctly indicated (3)
- Hydrogen bonds correctly indicated, differing in G/C and A/T (1)
6 5.1 (2.0/6.0) 4.3 (0/5.0) 5.0 (5.0/5.0)
Deoxyribose - Deoxyribose indicated (1)
- Deoxyribose linked to base (1)
2 1.3 (0/2.0) 1.0 (0/2.0) 1.5 (1.0/2.0)
Phosphate - Phosphate indicated (1)
- Phosphate and deoxyribose alternately arranged (1)
2 1.4 (0/2.0) 1.2 (0/2.0) 1.7 (1.0/2.0)
Primary structure - Single strand visible (1)
- Double strand visible (1)
2 1.6 (0.3/2.0) 1.6 (1.0/2.0) 2.0 (2.0/2.0)
Secondary structure - Double helix visible (1)
- Right-handed double helix visible (1)
2 1.1(0/2.0) 0.6 (0/1.8) 1.2 (0/2.0)
Sum   14 10.6 (6.0/13.0) 8.7 (2.5/11.0) 10.8 (8.0/13.0)
  1. aGrouped median, 25th and 75th percentiles in brackets