String Art and Envelopes, Family of Curves

####String Art and Envelopes

This is a classic math activity appropriate for children and adults at all levels, easy entry with advanced potentials. There is a lot of existing literature about the string art and the mathematical appeal of the envelopes (or family of curves).

#####Among the designs:

1. A bar with hexagonal connectors for 60-degree or 120 degree angles.
2. A bar with hexagonal connectors for a 90-degree angle.
3. A bar with octagonal connectors that allow 45-degree,