Electronic learning aid

Claim 2

An electronic learning aid for teaching addition, subtraction, multiplication, or division, comprising: means for automatically generating a multidigit problem having two operands; first display means for displaying said problems; input means for introducing an operator calculated answer for said problem; second display means for displaying information other than said problem including said calculated answer and a remainder of a division problem where present in said answer, said second display means having a sufficient number of digits to display the calculated answer of a multiplication problem in which each operand contains at least two digits; determination means for detecting whether said calculated answer including remainder, if any, is the correct answer to said generated problem; clearing means for erasing said operator calculated answer from said second display means to allow the operator to introduce a new operator calculated answer for said problem; and means for disabling said clearing means when said determination means is enabled.

Claim 3

The learning aid of claim 1, further comprising: means for varying the difficulty level of the problems generated by said means for automatically generating by varying the number of digits in the operands of said problems.

Claim 4

The learning aid of claim 2, wherein said means for automatically generating produces the same group of multidigit problems when the same level of difficulty step and total problem number count are used.

Claim 5

The learning aid of claim 1, wherein a predetermined number of problems are generated by said means for generating.

Claim 6

The learning aid of claim 4, wherein said count accumulated in said first counter means is displayed on said second display means.

Claim 7

The learning aid of claim 4, wherein said count accumulated in said second counter means is displayed on said second display means.

Claim 8

The learning aid of claim 4, wherein a total problem number count can be selected to vary the predetermined number of problems to be presented.

Claim 9

The learning aid of claim 4, wherein said second display means flickers when said determination means determines that the calculated answer is the correct answer.

Claim 10

The learning aid of claim 4, further comprising: stop key means for selectively terminating the generation of said predetermined number of problems by said means for automatically generating; first counter means for accumulating a count indicative of the total number of said predetermined number of problems already generated by said means for generating; second counter means for accumulating a count indicative of the number of calculated answers determined to be correct by said determination means; and percentage calculation means for calculating the percentage of said generated problems in which said calculated answer is the correct answer; said percentage calculation means being enabled by said stop key means to calculate the percentage of correct answers out of the number of problems generated prior to actuation of said stop key means; said percentage calculation means further calculating the percentage of correct answers after generation of said predetermined number of problems.

Claim 11

The learning aid of claim 9, wherein said percentage calculated by said percentage calculation means is displayed on said second display means.

Claim 12

An electronic learning aid for teaching addition, subtraction, multiplication, or division, comprising: means for automatically generating a predetermined number of multidigit problems having two operands; first display means for displaying said problems; input means for introducing an operator calculated answer for each said problem; second display means for displaying information other than said problem including said calculated answer, said second display means having a sufficient number of digits to display the calculated answer of a multiplication problem in which each operand has at least two digits; determination means for detecting whether said calculated answer is the correct answer to said generated problem; percentage calculation means for calculating the percentage of said generated problems in which said calculated answer is the correct answer when said predetermined number of problems have been generated; stop key means for selectively terminating the generation of problems by said means for automatically generating; and percentage score demand means responsive to actuation of said stop key means, said percentage score demand means energizing said percentage calculation means to determine the percentage of correct calculated answers upon actuation of said stop key means.

Claim 13

An electronic learning aid for teaching addition, subtraction, multiplication, or division, comprising: means for automatically generating a predetermined number of multidigit problems having two operands; first display means for displaying said problems; input means for introducing an operator calculated answer for each said problem; second display means for displaying information other than said problem including said calculated answer, said second display means having a sufficient number of digits to display the calculated answer of a multiplication problem in which each operand has at least two digits; determination means for detecting whether said calculated answer is the correct answer to said generated problem; percentage calculation means for calculating the percentage of said generated problems in which said calculated answer is the correct answer when said predetermined number of problems have been generated; stop key means for selectively terminating the generation of problems by said means for automatically generating; and percentage score demand means responsive to actuation of said stop key means, said percentage score demand means energizing said percentage calculation means to determine the percentage of correct calculated answers upon actuation of said stop key means.

Claim 14

An electronic learning aid for teaching addition, subtraction, multiplication, or division, comprising: means for automatically generating a multidigit problem having two operands, said automatic generating means generating a predetermined number of problems; first display means for displaying said problems; input means for introducing an operator calculated answer for said problem; second display means for displaying information other than said problem including means displaying said calculated answer, said second display means having a sufficient number of digits to display the calculated answer of a multiplication problem in which each operand contains at least two digits; determination means for detecting whether said calculated answer is the correct answer to said generated problem; and difficulty level selection means for varying the difficulty of said multidigit problems by varying the number of digits in said two operands.

Claim 15

An electronic learning aid for teaching addition, subtraction, multiplication, or division, comprising: means for automatically generating a multidigit problem having two operands, said automatic generating means generating a predetermined number of problems; first display means for displaying said problems; input means for introducing an operator calculated answer for said problem; second display means for displaying information other than said problem including means displaying said calculated answer, said second display means having a sufficient number of digits to display the calculated answer of a multiplication problem in which each operand contains at least two digits; determination means for detecting whether said calculated answer is the correct answer to said generated problem; and difficulty level selection means for varying the difficulty of said multidigit problems by varying the number of digits in said two operands.

Claim 16

The learning aid of claim 12, wherein the level of difficulty selected by said difficulty level selection means is displayed on said first display.

Claim 17

The learning aid of claim 13, wherein said second display means further displays the remainder of a division problem when present; said determination means determining the correctness of the remainder calculated by said operator.