This is a Science Unit Plan most appropriate for 3rd - 5th. I personally used this with both 4th and 5th grade classes.
+ Lesson 1: Parts of an Atom (protons, neutrons, electrons, nucleus, and orbital)
+ Lesson 2: Solids, Liquids, and Gases
+ Lesson 3: State Changes (Solids, Liquids, and Gases)
+ Lesson 4: Mixing
+ Lesson 5: Density (Sink or Float)
** Includes experiments, observation sheets,and vocabulary cards