Place Value

"However, if place value concepts are to be meaningful, children need to know more than what digit is in the tens place and what digit is in the ones place. They need to know that the underlying structure of two-digit numbers is based on organizing numbers into groups of tens and ones. This understanding is critical and basic to successful future work with larger numbers and decimals."

-Kathy Richardson in How Children Learn Number Concepts: A Guide to Critical Learning Phases

A Guide to Effective Instruction in Math, Grades 4 to 6: Number Sense and Numeration
http://eworkshop.on.ca/edu/resources/guides/NSN_vol_1_Big_Ideas.pdf

Mrs. Meacham's Math Tub Resources for Place Value
Google Drive Files