Professional Development to Practice Step 4: Presentation--“I Do” Input—The teacher provides information (lecture, film, text, etc. ). Modeling—The teacher shows students examples of what is expected as an end product. The critical aspects are explained through labeling, categorizing, and comparing to exemplars of what is desired. Checking for Understanding—The teacher monitors whether students have “got it” before proceeding— teachers need to have evidence of learning before students start guided practice. Hattie, J. 2009. Visible learning: A synthesis of over 800 meta-analyses relating to achievement. Jones, F. 2007. Tools for teaching.