I gave each student a leaf and they found the slope between two points and then decorated it. It was a nice exit ticket for our class on slope. We put them all together to make a tree.
The idea for my "pun-ny" sign actually came a student who said, "If this is an exit ticket, can we 'leaf' when we finish it." I took that and said, "We are ready for college when we 'leaf' ACHS." Then one of my students added some color to it when she finished a test early.
I think it turned out great - a perfect fall decoration! And best of all - no instructional time was lost in the making of this awesome math-y door decor!