1. The document discusses the use of personal response systems, also known as clickers, in teaching numeracy skills in a prison environment where internet access is limited. 2. Originally, the clickers were used more for summative assessments and competition rather than formative learning, but the author aimed to use them interactively based on research showing it improves learning outcomes. 3. The author implemented a formative assessment cycle with clicker questions to elicit student responses, discussions, and resolutions of misconceptions in order to better facilitate conceptual learning.