Advancing the design of knowledge-building software.
Presented at CSCL 2011 Symposium: Enhancing the Social and Cognitive Benefits of Digital Tools and Media.
7. To Tag Promising Ideas?
• Promisingness evaluation (Bereiter & Scardamalia, 1993; Bereiter, 2002)
• A need to identify promising ideas
A case study on Grade 3s’ discourse
8. Promising Ideas tool
• Design-based research (Brown, 1992; Collins, 1992)
Identifying ideas:
1. Click
2. Choose a color
3. Highlight an idea
4. The idea gets
highlighted and goes
to the box
9. Promising Ideas list:
Promising Ideas tool
1. Promising ideas listed
2. Choose a specific color list
3. Number of hits
4. Link backwards to notes
10. Pilot study 1: Grade 5/6 (Chen et al., 2011)
• 83 “promising ideas” from 207 notes
70.00%
60.00%
50.00%
40.00%
30.00%
20.00%
10.00%
0.00%
Theories Facts/Evidence Questions
11. Export ideas to a new view
Export selected
ideas to a new
view
12. Pilot study 2: Grade 3
• Promisingness treatment module
• “Progressive use”
– two iterations of “writing-tagging-exporting”
• Preliminary results
– less facts/evidence
– improved coverage of domain content
0.3
Cosine similarity measures
0.25
0.2
0.15
soil2011old
0.1 soil2011new
0.05
0
soilbithere soilcurr soilepa soilusda soilwiki
Expert corpus