Abstract: A card game apparatus for use in educating children in basic mathematical concepts. The deck consists of 52 cards, each containing integers between -6 and +6. There are four "suits", each being a different arithmetic operation symbol (e.g., addition, multiplication, etc.). Two of the suits are one color (red), and two another (black). The cards may be used in a variety of games, differing in complexity depending on the needs of the students. The cards can be used to instruct students in concepts ranging from simple matching to more complex arithmetic calculations. Unlike the prior art, the present invention also highlights such basic concepts as positive and negative value and sequential ordering of integers.