There will be a good book chapter on this coming out in August in an edited book I've been working on. The citation is:
van 't Hooft, M., & Swan, K. (2006).
Ubiquitous computing in education: Invisible technology, visible impact. Mahwah, NJ: Erlbaum Associates.
Information about it can be found here:
https://www.erlbaum.com/shop/tek9.asp?pg=products&specific=0-8058-5736-2 The chapter in question is one by Shin, Norris, & Soloway, and is entitled "Findings from Early Research on One-to-One Handheld Use in K-12 Education". This chapter echoes some of what you have posted here. Here is the chapter abstract:
"What is the evidence that handheld computing devices are having a positive impact on teaching and learning in K-12 education? To address that question, this chapter reviews the empirical research that has been conducted to date. Studies find that handheld use by students can lead to increases in motivation and achievement. That said, given the exceedingly early stage of handheld use in K-12 education and given the types of research methods that have been employed in the empirical work (e.g., interviews with students and teachers, surveys), the research findings, while suggestive, are not yet compelling. In summarizing upwards of 35 studies, our intent is to help the educational community better understand the conditions that must be in place in order for handhelds to support positive learning outcomes."
Mark
BTW, I was the guest on Soft Reset #10
