After students have solved Garage Sale Dominoes, challenge them to solve More Garage Sale Dominoes in which they must figure out how many different dominoes there are in a complete double-nine set. A sample solution using an orderly list is included in the pdf file.

**Enrichment on the Internet:**

- Challenge students to solve Math Forum's Domino Activities.
- Amaze students with your psychic abilities using the Domino Trick.
- Challenge students to solve the Domino Maze from Games magazine.
- Check out examples of Domino Artwork.

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