CS discoveries and special ed students

So I am looking for some advice on how to handle special ed students in my CS discoveries class. This year I will have three students out of a class of 12 that will be special education students. The students are very low. This would be with an eighth grade class and the special ed students probably function at a third or fourth grade level. What kind of modifications have you made to help those special ed students?What kind of success have you had with them working with partners/groups?