Practice and learn math on-the-go with Teach Me Tags Addition. A double-sided card with the math problem on one side and answer on the other, this will assist your child in developing their mathematical knowledge in basic addition. The tag's borders are color-coded according to a developmental progression. Includes 172 flashcards including 8 blank cards and 2 key rings. Age 5 and up. Covers the addition 1 to 20. Contains different additional math problem combinations. Visual arrays are provided to help children see the mathematical relationships. A perfect activity for independent or guided learning. Convenient size to carry anywhere.