ASL video by Dr. Bill Vicars, LifePrint.com  with his permission A set of NaviLens codes designed to make the numbers 0-15, math symbols, and a math problem "speak for themselves” in 35 spoken languages and "sign for themselves" in ASL (American Sign Language) is now available free from Teachers Pay Teachers thanks to the generosity of the wonderful people of NaviLens. These dual-purpose NaviLens codes can be added to flashcards or other materials to help students learn mat