This document discusses formative assessment tools that can be used on the fly, including Socrative, Kahoot.It, and Infuse Learning. It provides an overview of each tool, including their websites and highlights. Interactive demos of each tool are shown to illustrate how they can be used to create formative assessments. The document emphasizes that the focus should be on teaching, not technology, and encourages using the tools to create an assessment that could be implemented the next day.