37-page PDF document with teaching tips on using a single model for number from basic counting up thru and including quadratic expressions with applications. Contains suggestions for teaching pretty much all number concepts in between, mainly concentrating on all multiplication & division concepts/skills from simple whole numbers to fractions/mixed numbers to binomials to quadratics, all using physical and/or graphic representations. I was a math teacher from K thru grad-level university for 40+ years and simply want to share teaching techniques and methodology with other teachers, especially those of a more constructivist leaning. Please download the packet and incorporate parts or all of it as you deem appropriate. May these strategies prove as successful for you as they have been for me. Good luck!