Leslie Laud has differentiated math instruction in her own classroom and in her co-teaching with her math colleagues, and has been doing so for almost two decades. She teaches an online course on Differentiated Middle School Math Instruction at Bank Street College of Education. Additionally, she has presented at many conferences both nationally and internationally, including The National Council of Teachers of Mathematics annual conference. She has also published many articles in leading journals such as Educational Leadership and Teaching Exceptional Children . She currently leads staff development groups with teachers in school systems in the Boston area. She received both her doctorate in curriculum and instruction and her master?s in special education from Teachers College, Columbia University.