Mathematical teaching apparatus

  • US 5,749,734 A
  • Filed: 11/19/1996
  • Issued: 05/12/1998
  • Est. Priority Date: 11/19/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A mathematical teaching apparatus comprising:

  • a plurality of block elements;

    a block element container, for organizing and holding a plurality of block elements, wherein a plurality of block elements will lock and hold within said block element container only when a predetermined number of block elements are inserted into said block element container; and

    a container for block element containers, for organizing and holding a plurality of block element containers, wherein a plurality of block element containers will lock and hold within said container for block element containers only when a same said predetermined number of block element containers are inserted into said container for block element containers.

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