This document outlines Linda B. Nilson's top 10 best and worst teaching practices. The best practices include setting clear learning outcomes, giving students practice to reinforce learning, providing feedback, communicating high expectations, integrating challenges into learning, and getting mid-semester student feedback. The worst practices include making incorrect assumptions about student preparation, interest and motivation; using technology or group work ineffectively; and having poor classroom management that allows students to disregard rules and expectations.