Place Value
value of the digits in a number - Wyndi Padgett
expanded form vs. expanded notation - Wyndi Padgett
comparing decimals - Wyndi Padgett
rounding numbers - Wyndi Padgett

Multiplication/Division
representing multiplication using a area model and arrays - Wyndi Padgett

Data
Modeling of a "Stem and Leaf" word problem - Erin Tibodeau 
frequency tables - Wyndi Padgett