Sink or Float Interactive Notebook and Experiment Science Pack has everything you need to teach a sink/float unit. I have included 2 experiments with interactive journal entries for each. There is a center activity included that can also be used as an extra lesson or homework. I have included a note to parents and printables needed for lesson. The vocabulary lesson has pages to teach from and has interactive journal entry for vocabulary words. My students really got excited about this unit and I am sure yours will to.