This 23 slide PowerPoint Presentation takes you through the subtraction strategy of "Take a Penny". "Take a Penny" is a 2 step strategy that allows students to subtract across zeros without having to go through the complicated steps of regrouping. In fact with "Take a Penny", students can subtract across zeros without regrouping at ALL!
I learned the "Take a Penny" strategy last summer, and it has transformed the way my students subtract. I actually feel like I have cheated my past classes by n