Video help files: example addition subtraction multiplication #division# parenthesis signed parenthesis creating numbers strategies

Static Help: 23-15 274+162 25-18 12*12 324/18 (5+2)*3 -(5-10) 9998 => 9998+2-2 98*98

Nummòlt Download page Nummolt.zip: direct download

Animated help files: Example: 23-15 Reflections about subtraction with borrowing.

Example from Barbara Scott Nelson at Mosaic: The Big Idea Behind Regrouping: http://www.edc.org/newsroom/articles/america_counts

© 2010 Maurici Carbó Jordi of www.nummolt.com Video help built and converted to swf with: CamStudio: sourceforge.net/projects/camstudio/