Patent Document ID: 20030088596
Application ID: 10035735
Patent Flag: 0

Claim One:
1. A hand-held computing device for teaching procedures for solving mathematical problems comprising: a processor for performing mathematical operations; a memory including first areas for storing a master group of mathematical operations for solving mathematical problems, which operations are performable by said processor, said memory further including second areas for storing a “problem” linked list of mathematical problems which may include algebraic expression, said “problem” linked list comprising a first data set, said memory further including a third area for storing a mathematical “operations” linked list of selected ones of said master list of mathematical operations applicable to a selected mathematical problem of said “problem” linked list, said “operations” linked list not limited to a mathematical operation which leads to a solution of said selected mathematical problems; a display for displaying multi-lines of information including said selected mathematical problem and said “operations” linked lists of mathematical operations related to said selected mathematical problem; and an input device for inputting information related to mathematical problems and for selecting a mathematical operation to be performed on a selected mathematical problem from said mathematical “operations” linked list.