Economics is known for being a difficult subject, but perhaps what students dread most about the class is graphing. There is not a lot of multiple choice questions in my class- students are expected to graph routinely on bi-weekly quizzes. In order to support student development with their graphing abilities, last year I introduced mini-whiteboards as a way to get students practicing graphing as a class warm-up activity, focusing material from the previous class. (With a friend, I created the mini-whiteboards using showerboard using the funding of a learning grant, but one can also purchase them commercially). I was pleased to find that 20/20 (100%) of the students in my Microeconomics Principles (ECN212) demonstrated mastery of a quiz question (recieved at least 7 out of 8 points) in which they had to graph a perfectly competitive firm maximizing profit, including the shading in of profit or losses. This would be unheard of before the mini-whiteboards were used. This is evidence that engaging in active learning warm-ups (perhaps particularly in morning classes) supports student learning.