| Classification of Quadrilaterals | Elementary | April 3, 2000 |
| Classification of Triangles | Elementary | January 24, 2000 |
| Digits, Numbers, and Numerals | Elementary | October 30, 2000 |
| Interpreting “Less Than” and “Is Less Than” | Elementary | October 2, 2000 |
| Orientation, Regularity, and Convexity of Polygons | Elementary | November 13, 2000 |
| Symmetry About Lines and Points | Elementary | January 22, 2001 |
