If you are a new teacher or new to 4th grade math, these ready-to-teach Addition and Subtraction PowerPoint lessons and supplemental activities are exactly what you need! No need to spend hours creating your own...I have done the work for you! They are teacher-tested and student-approved as I've been using them with my own 4th graders for years. Each lesson has a clear beginning, middle, and end with interactive features to engage your students. You can customize them by adding video clips (Brai