The SAMR Model (Substitution, Augmentation, Modification, Redesign) offers some insight into different ways that technology can support the engagement of learners, as well as a description of the process through which educators (who are generally digital immigrants versus the digital natives they teach) grow as they broaden and deepen their facility and comfort with new tools.
Substitution: Substituting technology for former tools with no functional change
Augmentation: Substituting technology with some functional improvement
Modification: Using technology for significant task redesign
Redesign: Using technology for new tasks that were previously inconceivable with former tools
The picture above uses common programs and apps to illustrate how these different descriptors of technology use play out in the classroom.