Math Formula Writing on Greenboard

Stock video description

Contributor:	narvikk view portfolio
Keywords:	Mathematics, Blackboard, Mathematical Symbol, Formula, Human Hand, Chalk, Writing, Education, Calculating, Number, Green ...more
Downloads:	5
Views:	748
Uploaded on:	02-26-09 © narvikk
Source codec:	HD: Motion JPEG A
Length:	11.98 seconds
Anamorphic:	No

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