I'm surprised that (by appearances) these iPads were in essentially full-time 1:1 use in a 3rd grade classroom, when students have a lot of learning to do about

I'm surprised that (by appearances) these iPads were in essentially full-time 1:1 use in a 3rd grade classroom, when students have a lot of learning to do about and through movement and physical manipulation, not to mention social engagement. From what I've seen[1], in lower elementary grades technology can be very effectively used in the hands of the teacher (for assessment, interpreting student strengths and weaknesses in reading or math, and for projecting rich media). Putting devices in the hands of students in lower elementary is probably best done for very targeted purposes and limited time; for example, keeping the rest of class engaged with an activity while the teacher is giving his or her full attention to working with a reading small group for 30 minutes. [1]I've been part of teams creating teacher-facing tools for elementary, and digital curriculum for middle school and above.