Description Original triangle flash cards teach families of facts, showing the relationship between addition and subtraction. WCA Triangle flash card helps to relate between addition and subtraction. Card is ideal for 2 or more players and displays eight problems four are addition and four are subtraction. Usage ideas: Teach families of facts, showing the relationship between addition and subtraction Includes 20 flash cards, instructions Number of players: 2 or more Each card displays eight problems four are addition and four are subtraction Relationship between addition and subtraction facts is emphasized Cards permit individualization of drill without changing cards Harder fact is printed on one side of a card and an easier fact is printed on the other side Supports state and national mathematics standards Students will gain efficiency in memorizing Addition problems are created by covering the red numeral at the top of the card Subtraction problems are created by covering the black numeral Cover both black numerals and have students name all possible combinations which equal the red number Dimensions: 6 1/2"(H) x 6 1/4"(W) x 1 1/4"(D) Weight: 5 oz. Shows the relationship between addition and subtraction Also shows the relationship between multiplication and division Math facts are shown on 20 cards Specifications Brand : WCA Customizable : No Weight : 1.00 lbs. per Pack
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