Cracking the "Teen Number" code just got easier!Are the teen numbers a "stuck point" in your classroom? For many students with ASD or developmental delays, numbers 11–20 feel random and disconnected. The Yellow Level Mastery Sheets provide the visual scaffolding necessary to turn "The Teens" into a predictable, logical system. Why Unit 3 is a Game-Changer:Visual Place Value: Each sheet uses the "Ten-Mask" logic to show exactly how teen numbers are composed ($10 + some more$).1:1 Scale Building