This resource has been designed for older, Special Education students (14-18-year-olds) working at Grades 1-2. It contains an age-appropriate, editable 50-slide PowerPoint lesson and a 28-page workbook on the addition of two-digit numbers. The workbook includes 6 information/explanation pages, 19 worksheets, a progress check, a certificate of achievement, and answers.These resources will enable the students to achieve the following outcomes:Add two-digit numbersUse addition to solve word problem