Library of Visual Manipulatives

This is another terrific resource:  the Library of Visual Manipulatives from Utah State University.

http://nlvm.usu.edu/

There are one hundred or so simple, interactive programs available spanning Algebra, Geometry, Numbers and Operations, Measurement, and Data.  And everything is sorted by appropriate age level.  There are certainly a  lot of interesting activities to navigate through here.

I’d say this is NSF money well-spent.