Abstract: A game apparatus and a method for assisting in teaching the addition and subtraction of positive and, especially, negative numbers, are based on the Null Theory of Adding and Subtracting Positive and Negative Numbers. The apparatus comprises (a) a plurality of positive units, (b) a plurality of negative units, (c) a demarcated playing zone, and (d) a means for measuring the number of free positive units and free negative units within the demarcated playing zone. Within the demarcated playing zone, free positive units combine with free negative units zone to form null units, with each null unit comprising an equal number of positive units and an equal number of negative units. Each null unit preferably comprises one positive unit and one negative unit.

Abstract: Decks of addition, subtraction, multiplication, division, and number recognition playing cards cover all the numbers generally employed in teaching children basic addition, subtraction, multiplication, division, and number recognition skills and are suitable for use in playing a variety of well know card games such as War, Concentration, Old Maid, Go Fish, Rummy, Gin Rummy, 21, and Spit.

Abstract: A dice game apparatus comprises a first numerical die, a second numerical die, and at least one operator die selected from the group consisting of a first operator die and a second operator die. While the dice game apparatus comprises the first operator die and/or the second operator die, the dice games are played with just three dice, namely, the first numerical die, the second numerical die, and either the first operator die or the second operator die.

Abstract: Game apparatuses and methods for assisting in teaching the addition, subtraction, multiplication, and division of positive and, especially, negative numbers, are based on the Null Theory of Adding, Subtracting, Multiplying, and Dividing Positive and Negative Numbers. An exemplary game apparatus comprises (a) a plurality of positive units, (b) a plurality of negative units, (c) a demarcated playing zone, and (d) a means for measuring the number of free positive units and free negative units within the demarcated playing zone. Within the demarcated playing zone, free positive units combine with free negative units zone to form null units, with each null unit comprising an equal number of positive and negative units. Each null unit preferably comprises one positive unit and one negative unit.

Abstract: Game apparatuses and methods for assisting in teaching the addition, subtraction, multiplication, and division of positive and, especially, negative numbers, are based on the Null Theory of Adding, Subtracting, Multiplying, and Dividing Positive and Negative Numbers. An exemplary game apparatus comprises (a) a plurality of positive units, (b) a plurality of negative units, (c) a demarcated playing zone, and (d) a means for measuring the number of free positive units and free negative units within the demarcated playing zone. Within the demarcated playing zone, free positive units combine with free negative units zone to form null units, with each null unit comprising an equal number of positive and negative units. Each null unit preferably comprises one positive unit and one negative unit.

Abstract: A game apparatus and a method for assisting in teaching the addition and subtraction of positive and, especially, negative numbers, are based on the Null Theory of Adding and Subtracting Positive and Negative Numbers. The apparatus comprises (a) a plurality of positive units, (b) a plurality of negative units, (c) a demarcated playing zone, and (d) a means for measuring the number of free positive units and free negative units within the demarcated playing zone. Within the demarcated playing zone, free positive units combine with free negative units zone to form null units, with each null unit comprising an equal number of positive units and an equal number of negative units. Each null unit preferably comprises one positive unit and one negative unit.

Abstract: A dice game apparatus comprises a first numerical die, a second numerical die, and at least one operator die selected from the group consisting of a first operator die and a second operator die. While the dice game apparatus comprises the first operator die and/or the second operator die, the dice games are played with just three dice, namely, the first numerical die, the second numerical die, and either the first operator die or the second operator die.

Abstract: A domino game apparatus intended to amuse and teach basic mathematical concepts to young children (generally from about 3 to about 6 years old) comprises (a) a pictorial indicia set comprising a plurality of pictorial indicia playing pieces; and (b) a symbolic indicia set comprising a plurality of symbolic indicia playing pieces, where (i) the pictorial indicia playing pieces of the pictorial indicia set are equal in number to the symbolic indicia playing pieces of the symbolic indicia set; (ii) the face of each pictorial indicia playing piece of the pictorial indicia set depicts a unique pair of pictorial indicia of numerical values; (iii) the face of each symbolic indicia playing piece of the symbolic indicia set depicts a unique pair of symbolic indicia of numerical values; (iv) each unique pair of pictorial indicia of numerical values on the face of each pictorial indicia playing piece of the pictorial indicia set corresponds to its respective numerically equivalent unique pair of symbolic indicia of nume

Abstract: A playing card that is suitable for use in a deck of playing cards to teach young children (i.e., ages 3 to 6 years) an alphabet or other basic skill has a playing face and a rear face where (a) the playing face bears an (1) indicia, (2) a first smaller version of the same indicia in the upper left hand corner, and (3) a second smaller version of the same indicia in the upper right hand corner, and where all versions of the indicia on the playing face are in an upright position and the upper left and upper right hand corners of the playing face are at the top of the playing card; and (b) the rear face bears a design that indicates the top of the playing card. Preferably, the playing face is devoid of any other graphics other than the indicia. A deck comprises one or more sets of the forgoing playing card can be used to play concentration, rummy, war, old maid, go fish, and many other card games.