14 January 2017: If you drag a free point (such as x or C) out of the window, it now snaps back to the window boundary.
01 April 2016: Updated to 4.5.0
10 April 2016: Shortened and improved worksheet, added an introduction to Dilation Games in main sketch
15 December 2015: Modified Game 2 of Dilate Games to show scale as a fraction in feedback.
14 December 2015: Divided up the worksheet into three separate tasks.
18 October 2015: Created this page.
This web site is based in part upon work supported by the National Science Foundation under KCP Technologies Award ID 0918733, with grant period September 1, 2009 through August 31, 2013. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.