Lesson Summary Students examine a small collection of plastic bones and discuss function as related to structure.  They determine which bones go together to form a complete leg and identify the kinds of joints involved. Teacher Background Human, rodent, and chicken leg bones have general similarities and specific differences. Set-up/Management Tips Teacher should familiarize themselves with the plastic bones and how they fit together. Discuss proper use and handling of plastic bones with students.  Remind students that bones should be in the same condition when they are finished with them. Copy any journal sheets needed for this activity. Literacy Support Books Available Through VAST Mediagraphies: (see Literacy Links) Science Stories N/A Scientific Vocabulary The following words are key vocabulary words that will be introduced in this lesson and reinforced throughout the unit: No new vocabulary words.