I teach high school and my CSD classes have about 3 alternate curriculum students per period. These students might be developmentally at at kindergarten or 3rd grade level. It’s quite difficult to have these students work on what the general ed students work on, but the spirit of integrating the special needs students (as far as I understand) is giving them exposure to the content that general ed students are doing.
I’m currently in the data unit and something I’ve found helpful and relevant are these data/graphing worksheets at around a 1st grade level:
Heads up that you’ll need to register for a free account to download.
For the programming units, what I’ve found very helpful are code.org’s curricula for younger students (Course A, B, C, pre-reader express, etc.)