Classroom uses for iPads and cell phones are vast and varied. Some schools are replacing print books for apps that feature videos and interactive quizzes. Kindergarteners are learning to read using an iPad app. Teachers are using tablets to monitor student progress on “dashboards” that show moment-by-moment test scores. Others are using cell phones to take instant polls in class to gauge student comprehension. And more students are using smartphones, many of which have stronger processing power than their schools’ desktop computers, for instant fact-finding, calculating, mapping, and note-taking.