This is a no-prep, dry erase addition and subtraction to 20 (basic facts) intervention folder. Students use these folders for extra practice or intervention time with an adult helper!They’re designed for teachers, instructional assistants, paraprofessionals, parent volunteers, student interns, or any adult to work with students who may need extra help in a one-on-one setting without you having to print, copy, or create tons of activities for them to use. The pages are placed in sheet protectors