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56:31 Flex Campus Discussion Flex Campus Discussion	Flex Campus Discussion Flex Campus Discussion flex campus discussion students classroom things class classes ernie campus irin hisd 3x faculty face fall anne thing fact idea lot chat andy From Richard Gosselin 0 likes 0 Creative Commmons License Attribution: CC BY
06:27 Document Camera Installation and Demonstration Document Camera Installation and Demonstration	Document Camera Installation and Demonstration Document Camera Installation and Demonstration document camera camera screen problem board erase student document side thing run equation sides 3x doe john focus autofocus classroom rise slope From Richard Gosselin 0 likes 0 Creative Commmons License Attribution: CC BY
03:09 The Use of Mathematics in Economics - The Algebra… The Use of Mathematics in Economics - The Algebra of Straight Lines	The Use of Mathematics in Economics - The Algebra of Straight Lines The Use of Mathematics in Economics - The Algebra of Straight Lines introductory algebra straight lines slope y-intercept axis difference 3x lines sloping thing change function words run variable care direction matter domain answer layman intercept moment From Richard Gosselin 0 likes 0