These lessons are designed to guide young children through an introduction to symmetry using a puzzle set of seven geometric shapes called Tangrams.
As children manipulate the tangrams, they will visually learn about slides (translation), turns (rotation), and flips (reflection).
Each activity is aligned to the NCTM Standards, Grades K2: Geometry and to the Philadelphia Mathematics Content Standards 3.1, 3.2, 3.3, 3.4.
Each of the lessons has been designed to include four types of activities:
 interactive, manipulativebased projects
 technology
 paper/pencil practice
 literature connections
