This CGI Joining Problem Bundle has 30 different problems for Join Result Unknown, Join Change Unknown, and Join Start Unknown! This package bundles my three different joining packages, but at a discounted price! I have made the bundle editable so that once you download it, you can change fonts, names of students, etc. to make it more meaningful for your class.
For each problem, I have included a teaching slide to display to your class (if you so choose) which also has the standards listed for