The SAMR model is a conceptual tool that helps an educator evaluate the level of integration that some instructional technology has in their classroom. I believe that using this model is a huge factor in ensuring that teachers appropriately implement instructional technology in a way that satisfies a specific need in their classroom. This model suggests that there are 4 different levels through which technology integrates itself into the classroom: (Substitution, Augmentation, Modification and Redefinition)
To be clear, this is not to suggest that one level of integration is more important than another. Rather, this level of integration analysis can function as an evaluative tool to ensure that the integrated technology is being used in a way that meets the needs of students as well as the needs and technology capacity of the teacher.
The SAMR model can also act as a tool to provide multiple entry points for technology integration. Substitution and Augmentation integration often feel inherently easier than Modification and Redefinition integration. I love using these entry points as a method of getting your feet wet with using technology in the classroom.
Here is a great article from Edutopia if you would like to know more about the SAMR model and how it can be used in your classroom.
SAMR Visual Model, Source: https://www.edutopia.org/article/powerful-model-understanding-good-tech-integration/
It may surprise you to know that the Technology Acceptance Model is a concept that has been around since the 80s! This model helps provide an understanding of what may cause a user to use or reject a particular technology. In short, the Technology Acceptance Model suggests that a technology's Ease of Use and the potential user's Perceived Ease of Use are two of the biggest factors to consider when determining if the technology will be used and successfully integrated into the user's classroom. Future research and modifications to the Technology Acceptance Model have suggested there are other "External Factors" that may exist that affect a user's intention to use the technology.