The Original Triangle Flash Cards - Addition & Subtraction - 20 Per Set - 3 Sets Art & Crafts>>Styrofoam Arts>>Styrofoam Sheets You have to be quick

You have to be quick

25" x 35"]

Designed with gears to provide a hands-on

Fun to wear indoors or out

Use Renaissance® rounds for fine lines

The Original Triangle Flash Cards - Addition & Subtraction - 20 Per Set - 3 Sets Art & Crafts>>Styrofoam Arts>>Styrofoam Sheets You have to be quickEliminate 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.