This resource has been designed for older, Special Education students (14 - 18-year-olds) working at Kindergarten level. It contains an age-appropriate, editable, 60-slide PowerPoint lesson and a 25 page workbook on subtraction within 20.These resources will help students to achieve the following learning outcomes:Subtract one number from another number within 20Recognize and interpret the symbols - and = appropriatelySolve word problems using numbers to 20Understand the keywords – subtract, mi