Notes
- Illinois State Board of Education
- Everyday Math Curriculum Resource Page (University of Chicago)
- National Council of Teachers of Mathematics (NCTM)
- Math Website: www.papajan.com/math/learn.html
- Christy Knuchel, Teaching Symmetry in the Elementary Curriculum, 2004
- Jill Britton, Symmetry and Tessellations, 2000
- Roger Howe, Continuous Symmetry
Comments: