I used this product with Kindergarten Students. There are three "sets" of cards included. One with simple addition sentences, one with the number, and one with ten frames filled with raindrops. I printed each type of card on a different color of cardstock and then laminated them. The students should match one card of each type to the cards of the other two styles with the same number represented. If using younger groups or at the beginning of the year you may chose to only use two styles of card instead of three. There is a blank umbrella and ten frame included so you can add your own.