
Subtraction by Expansion
April 5, 2011 
Addition by Expansion
April 5, 2011 
Addition Algorithm – MAB Demonstration
April 4, 2011 
The takeaway bar: generate hard subtractions (FUSE Learning Resources ID: GZEET7)
June 3, 2010

The takeaway bar: make your own hard subtractions (FUSE Learning Resources ID: 9B4ZYY)
June 3, 2010 
The difference bar: generate easy subtractions (FUSE Learning Resource ID: HB8U3J)
June 3, 2010 
The difference bar: generate hard subtractions (FUSE Learning Resource ID: 8Z3762)
June 3, 2010 
The difference bar: make your own hard subtractions (FUSE Learning Resource ID: REZJ5Z)
June 3, 2010

The Partadder: make your own hard sums (FUSE Learning resource ID: PX2JQC)
May 28, 2010 
The Partadder: generate hard sums (FUSE Learning Resource ID: 2FNFBZ)
May 28, 2010 
Subtraction on a number line (difference)
January 12, 2010 
Subtraction using place value cards
January 11, 2010

Bingo
January 11, 2010 
Weigh the Wangdoodles
January 4, 2010 
Home Run Derby – Estimate addition, subtraction and/or multiplication
January 4, 2010 
Estimation Valley Golf
January 2, 2010