The Original Triangle Flash Cards - Addition & Subtraction - 20 Per Set - 3 Sets

Eliminate memory overload and learn 4 math facts on each side of a card! Triangle Flash Cards teach families of facts, showing the relationship between addition and subtraction. How is 4 in one corner related to 7 and 3 in the other corners? For 2 or more players. Each card displays eight problems - four are addition and four are subtraction. Relationship between addition and subtraction facts is emphasized. Students will gain efficiency in memorizing. Cards permit individualization of drill without changing cards. A harder fact is printed on one side of a card and an easier fact is printed on the other side. Includes variations in activities. Supports state and national mathematics standards. Each set includes 20 cards and instructions. Sold as 3 identical sets of flash cards.Learn math in a flash -- sold as 3 identical sets, each set of math flash cards includes 20 double-sided, triangular cards. use them to help kids, aged 6+, master addition and subtraction while learning families of facts.Build early math skills -- master basic addition and subtraction! review addition by covering the red number. review subtraction by covering either of the black numbers.Take them anywhere -- these cards ensure a fun math experience anywhere. use them in study groups, classrooms or for revision at home!Suits various skill levels -- each card contains easier problems on one side and more difficult problems on the other. kids gain confidence by using the same cards as more proficient students.Developed by an expert -- in the 1970s, dr. lola may, a renowned mathematics educator, introduced the idea of triangle flash cards. these cards follow her original idea!Rev up learning! -- pair these with our multiplication and division triangle flash cards (sold separately) to complete the classroom or homeschool experience.