"Why do I need to know how to do math when I can find the answer on my phone?" If you've ever heard a variation of that question from your students--or asked it yourself--this book is for you. Bringing technology into the classroom is about so much more than replacing overhead projectors and chalkboards with Smart Boards. Unfortunately, as Stanford Professor Jo Boaler says, "We are in the twenty-first century, but visitors to many math classrooms...