TRACE Code Analysis Results for TRACY and SILENE Benchmark Phase II
Trace Analysis - early results
Transcript of Trace Analysis - early results
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Project Lighthouse trace analysisearly results
Alan Dix18/3/2016
Talis and University of Birmingham
http://alandix.com/academic/papers/LS2016/
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2014/15 essential reading 55 students
two phases teaching period revision period
2015/2016 supplementary reading 3 students !
one document …
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2015 run of course
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Trace 1 – triage only
~ 50 secs
page 14 only half-way throughdocument
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Trace 2 – skim read and top-and-tail
~ 5 mins
4 minute gap
brief return to text
top-and-tailreads from start,
appears to get bored,reads backwards
from end
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Trace 3 – start at end
starts at endbut student isnot returningfirst view of
document – odd
~ 10 mins
page withnice diagrams
firstexamples
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2014 run – revision
revisionperiod
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Trace 4 – full skim
assume browserwindow left open
~ 2 mins
reads rightto end, but toofast for proper
reading
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Trace 5 – skim and pause
stops half-waythrough document
~ 4 mins
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Trace 6 – top-and-tail
~ 45 secs
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Trace 7 – skim + pause
~ 7 mins
two and half mins on this page includingshort recap
pause onpages withdiagrams, but skip
the maths!
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2014 run - teaching
teachingperiod
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Trace 8
~ 25 mins
~ 3 mins recap plus skim to end
~ 10 mins initial read to page 20
~ 10 mins on page 20 browser openbut not reading?
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Trace 9
~ 3 ½ mins
skim to page 21
1 min skim to page 14
50 secs on pages 14&15
25 secs on
page 21
skim to end
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Trace 10
~ 30 mins
another skim forward then gives up
20 mins on first three pages working hard, but finding it tough
quick peek forward and skip
spends 8/9 mins on pages 8 to 12 (state diagrams)
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Trace 11 – repeated skims
7 hours
each consists of two 1 or 2 min skims30 mins apart
two 30 min sessions about 7 hours apart
~ 30 mins
~ 30 mins
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growing understanding
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… and very messy
lots of work still to do!