These events are interesting in several respects. First,
Don continues to demonstrate his skill and the enjoyment
he experiences with the engineering aspects of this activity.
Don is clearly thinking about the mechanisms at work in
the CDS when he observes that the reason the Australian
system is working differently (at first) is because of the
“empty balloon”; furthermore, he notes with glee that the
reason the system worked then was because of the presence
of air. It is entirely conceivable that, if a teacher were not
within earshot of Don, she would have no way to recognize
the productive thought in which Don is engaged or the
level of conceptual understanding that he reveals in his
spontaneous comments. This is especially true if the teacher
is left to rely on the written entry that Don makes in his
notebook, which is initially incomplete and reveals nothing
concerning the fact that Don has essentially “discovered”
neutral buoyancy through his manipulation of the CDS. On
the other hand, with fairly minimal assistance with transcription,
we get a much richer picture of Don’s thinking.
These events are interesting in several respects. First,Don continues to demonstrate his skill and the enjoymenthe experiences with the engineering aspects of this activity.Don is clearly thinking about the mechanisms at work inthe CDS when he observes that the reason the Australiansystem is working differently (at first) is because of the“empty balloon”; furthermore, he notes with glee that thereason the system worked then was because of the presenceof air. It is entirely conceivable that, if a teacher were notwithin earshot of Don, she would have no way to recognizethe productive thought in which Don is engaged or thelevel of conceptual understanding that he reveals in hisspontaneous comments. This is especially true if the teacheris left to rely on the written entry that Don makes in hisnotebook, which is initially incomplete and reveals nothingconcerning the fact that Don has essentially “discovered”neutral buoyancy through his manipulation of the CDS. Onthe other hand, with fairly minimal assistance with transcription,we get a much richer picture of Don’s thinking.
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