Everyday Mathematics Partial Sums Algorithm http://www.dallassd.com/resources/Parent%20Resources/PartialSums.htm
Everyday Mathematics Partial Differences Algorithm http://www.dallassd.com/resources/Parent%20Resources/PartialDifferences.htm
The Everyday Mathematics homepage http://everydaymath.uchicago.edu/
Everyday Mathematics Partial-Products Algorithm http://www.dallassd.com/resources/Parent%20Resources/PartialProducts.htm
Everyday Mathematics Lattice Multiplication http://www.dallassd.com/resources/Parent%20Resources/Lattice.htm
Everyday Mathematics Partial-Quotients Algorithm http://www.dallassd.com/resources/Parent%20Resources/DivisionSubtmethod.htm