Mini Matisse: Optical Illusion Line Design
  Mrs. E Teaches Math: June 2015
 January 2012 ~ Artful Artsy Amy
 Mrs. E Teaches Math: June 2015 
 Graphic, Entertainment, News, Phenomenon, Tutorial: 17 January 2010
  NEXUS: February 2015
funny optical illusions lesson plans
 Graphic, Entertainment, News, Phenomenon, Tutorial: 17 January 2010funny optical illusions lesson plans