Double Value Flash Cards
Teachers' 1st choice for over 25 Years. Durable, thick card stock. Sturdy boxes. Notched corners for quick sorting. Great for teaching the relationship between +/- and x/÷, (e.g.: 3+1=4 on one side, 4-1=3 on the reverse). Set of 90 classroom-sized cards. Measure 6 1/2" x 3 1/4" (16cm x 8cm).
+ - Item is a closeout and supplies may be limited.