Check out our Debug'ems!
A Scratch Debug'em is a Scratch project intentionally designed to be incomplete or buggy so that a student who debugs it gains experience with one or more computing concept (such as conditionals, loops, lists). To get started, click on the "Debug'ems to Share" link on the left.
Contact us at scratchdebugems@googlegroups.com
See our website about Debugems and other Deconstruction Kitshere.
See our paper: Debug'ems and Other Deconstruction Kits for STEM Learning.
Disclaimer: This project is a work in progress. We are actively working on user interface design, and delivery decisions. In the mean time, you are welcome to try out the Debug'ems we've posted, share them with your students, and let us know what you think!