Discovery Toys THINK IT THROUGH Learning Tiles Reading Set for use with #3090 Learning Tiles Case (not included). Improve reading skills with 50 self-checking reading activities. Includes two sets of activity cards. Set one has 25 cards and is complete. Set two is missing the first 4 cards, so there are only 21 cards instead of 25. Please see photos for visual description. This is the exact item you will receive.