This is a basic card sort that can last a LONG time if you expect your students to explain why they place the cards under each heading. There are 18 colored cards that can be printed and laminated. The 18 cards can be placed under the headings: weathering, erosion, deposition. While the cards can be used in more than one category, I arranged them into the most likely answers so page 1 of the picture cards represent erosion, page 2 are weathering pictures, and the final page of pictures relate to deposition. This will make it easier so that if you, like me, don't cover deposition with weathering.erosion, you can eliminate them from the card sort. Enjoy!