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Protractor Angle Demo
Author:
Caitlyn Zitka
,
rcsellers
Just a quick demonstration of why there are two scales on a protractor. Many students don't seem to have a good conceptual grounding in how they should reason through which scale to use.
GeoGebra
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Cup Modeling Project (V2): Building Surfaces of Revolution
apec
Ellipse and Equation
WC 2018
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PHONE-205
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תרגיל 13 - פתרון משוואה ריבועית
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Orthocenter
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