Dreiling, Keith  <br/><br/>
The Do Nothing Machine   (Journal Article) 

 - Reston, Virginia   :National Council of Teachers of Mathematics   ,2023 
 - 697-701p. 
 - Mathematics Teacher: Learning and Teaching PK-12   Volume 116: Issue 9, September 2023 .
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<br/><br/> Abstract: The Trammel of Archimedes traces an ellipse as the machine’s lever is rotated. Specific measurements of the machine are used to compare the machine’s actions on GeoGebra with the graph of the ellipse and an ellipse formed by the string method. 
<br/><br/><label>ISSN: </label>0025-5769 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Algebra| Quadratics and Conics| Geometry| Geometry and Measurement| Technology| Computers