This was created to practice 1.MD.1 from the Common Core. There are 8 cards featuring lengths to compare on each. My students used pipe cleaners as the 3rd object to compare with. This was a great tool since they could simply bend the pipe cleaner in order to record the length they measured, and it wouldn't be lost while moving the pipe cleaner to the next object to measure as they often do when using their fingers to mark measurements. A recording sheet is provided, as well as options for using this as a math center, Scoot type activity, or as a small group lesson.