Also workshops for teachers. An enrichment unit in basic geometry and symmetry, including translation, tessellation and reflection, ideas on line designs and knot designs for teaching lines and line segments, and ideas for daisy designs to teach the use of a pair of compasses. Mayan Arithmetic - Steven Fought A discussion of the importance of the Mayan symbol for zero and a tutorial on adding Mayan numbers by Steven Fought, written when he was a junior at Strath Haven High School in Wallingford, Pennsylvania. Articles describing the calculation of the correlation between the Mayan and Christian systems of dating, and the results of Mayan Astronomy in the Dresden Codex and the Correlation between the Mayan and Christian Systems of Dating. The Mayans devised a counting system that was able to represent very large numbers by using only 3 symbols, a dot, a bar, and a symbol for zero, or completion, usually a shell.
Charts here show the number cycle, as well as principles of arithmetic.
Geometry - Chris Hardaker A physical, proportional geometry that originates from the simple circle. A growing body of architectural and iconographic evidence suggests this geometry was a relatively common tradition and has been practiced for at least 2000 years. The regional education laboratory serving Arkansas, Louisiana, New Mexico, Oklahoma, and Texas. Conducts applied research and development, delivers training, and provides technical assistance to K-12 educators and decision makers. Students may submit answers to their own teachers via an onsite form.