Patents Assigned to String Math, LLC.
  • Patent number: 8021159
    Abstract: A string math manipulative system and method is provided including series of a particular number of holed objects threaded on strings. The holed objects comprise one or more variations in color and/or shape and/or material, with the variations configured to represent math facts. For example, to illustrate the number family summing to 5, three strings would be included in the set; one string having all holed objects of a first variation representing 5+0=5 or 0+5=5, one string having one holed object of the first variation and four holed objects of a second variation representing 4+1=5 or 1+4=5, and one string having two holed objects of the first variation and three holed objects of the second variation representing 4+1=5 or 1+4=5.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: September 20, 2011
    Assignee: String Math, LLC.
    Inventor: Leslie Siegel