Here is a great resource to teach children and adults using Zentangle®-inspired art.
This pdf contains:

•  Historical Illumination Facts
•  Supply List
•  Step-By-Step Lesson Overview
•  5 Step-By-Step Zentangle Patterns inspired by the creative founders of Zentnagle Inc., Maria Thomas and Rick Roberts.
•  27 Alphabet characters (Including Ampersand) with Dots for Border and Ribbon placement.